Submission #1014471
Source Code Expand
#include <iostream> #include <vector> #include <cstdio> #include <sstream> #include <map> #include <string> #include <algorithm> #include <queue> #include <cmath> #include <functional> #include <set> #include <ctime> #include <random> #include <chrono> #include <cassert> #include <tuple> #include <utility> using namespace std; namespace { using Integer = long long; //__int128; template<class T, class S> istream& operator >> (istream& is, pair<T,S>& p){return is >> p.first >> p.second;} template<class T> istream& operator >> (istream& is, vector<T>& vec){for(T& val: vec) is >> val; return is;} template<class T> istream& operator , (istream& is, T& val){ return is >> val;} template<class T, class S> ostream& operator << (ostream& os, const pair<T,S>& p){return os << p.first << " " << p.second;} template<class T> ostream& operator << (ostream& os, const vector<T>& vec){for(size_t i=0; i<vec.size(); i++) os << vec[i] << (i==vec.size()-1?"":" "); return os;} template<class T> ostream& operator , (ostream& os, const T& val){ return os << " " << val;} template<class H> void print(const H& head){ cout << head; } template<class H, class ... T> void print(const H& head, const T& ... tail){ cout << head << " "; print(tail...); } template<class ... T> void println(const T& ... values){ print(values...); cout << endl; } template<class H> void eprint(const H& head){ cerr << head; } template<class H, class ... T> void eprint(const H& head, const T& ... tail){ cerr << head << " "; eprint(tail...); } template<class ... T> void eprintln(const T& ... values){ eprint(values...); cerr << endl; } class range{ Integer start_, end_, step_; public: struct range_iterator{ Integer val, step_; range_iterator(Integer v, Integer step) : val(v), step_(step) {} Integer operator * (){return val;} void operator ++ (){val += step_;} bool operator != (range_iterator& x){return step_ > 0 ? val < x.val : val > x.val;} }; range(Integer len) : start_(0), end_(len), step_(1) {} range(Integer start, Integer end) : start_(start), end_(end), step_(1) {} range(Integer start, Integer end, Integer step) : start_(start), end_(end), step_(step) {} range_iterator begin(){ return range_iterator(start_, step_); } range_iterator end(){ return range_iterator( end_, step_); } }; inline string operator "" _s (const char* str, size_t size){ return move(string(str)); } constexpr Integer my_pow(Integer x, Integer k, Integer z=1){return k==0 ? z : k==1 ? z*x : (k&1) ? my_pow(x*x,k>>1,z*x) : my_pow(x*x,k>>1,z);} constexpr Integer my_pow_mod(Integer x, Integer k, Integer M, Integer z=1){return k==0 ? z%M : k==1 ? z*x%M : (k&1) ? my_pow_mod(x*x%M,k>>1,M,z*x%M) : my_pow_mod(x*x%M,k>>1,M,z);} constexpr unsigned long long operator "" _ten (unsigned long long value){ return my_pow(10,value); } inline int k_bit(Integer x, int k){return (x>>k)&1;} //0-indexed mt19937 mt(chrono::duration_cast<chrono::nanoseconds>(chrono::steady_clock::now().time_since_epoch()).count()); template<class T> string join(const vector<T>& v, const string& sep){ stringstream ss; for(size_t i=0; i<v.size(); i++){ if(i>0) ss << sep; ss << v[i]; } return ss.str(); } inline string operator * (string s, int k){ string ret; while(k){ if(k&1) ret += s; s += s; k >>= 1; } return ret; } } constexpr long long mod = 9_ten + 7; class SuffixArray{ public: vector<int> sa; vector<int> lcp; vector<int> rank; SuffixArray(const string& SS) : S(SS), len(SS.size()), sa(SS.size()+1), lcp(SS.size()+1), rank(SS.size()+1) { constract_sa(); constract_lcp(); } void dbg_print(){ for(int i=0; i<=len; i++){ cerr << S.substr(sa[i]) << " " << lcp[i] << endl; } } private: const string& S; int len; //Manber & Myers //O(len (logN)^2) void constract_sa(){ //first character for(int i=0; i<=len; i++){ sa[i] = i; rank[i] = (i<len) ? S[i] : -1; } vector<int> tmp(len+1); for(int k=1; k<=len; k *= 2){ auto cmp_func = [&](int x, int y) -> bool{ if(rank[x] != rank[y]) return rank[x] < rank[y]; int l = (x+k <= len) ? rank[x+k] : -1; int r = (y+k <= len) ? rank[y+k] : -1; return l < r; }; sort(sa.begin(), sa.end(), cmp_func); tmp[sa[0]] = 0; for(int i=1; i<=len; i++){ tmp[sa[i]] = tmp[sa[i-1]] + (cmp_func(sa[i-1],sa[i])==true?1:0); } for(int i=0; i<=len; i++){ rank[i] = tmp[i]; } } } void constract_lcp(){ for(int i=0; i<=len; i++) rank[sa[i]] = i; int h=0; lcp[0] = 0; for(int i=0; i<len; i++){ int j=sa[rank[i]-1]; if(h>0) h--; for(; j+h<len && i+h<len; h++){ if(S[j+h] != S[i+h]) break; } lcp[rank[i] - 1] = h; } } }; template<class T=int> class SparseTable{ public: SparseTable(int len, T default_value_ = 100000000, function<T(T,T)> eval = default_evaluate) : col(len), default_value(default_value_) { evaluate = eval; row = 1; while((1<<row) < col) row += 1; row++; table = vector<vector<T>>(row, vector<T>(col, default_value)); } SparseTable(vector<T>& vec, T default_value_ = 100000000, function<T(T,T)> eval = default_evaluate) : col(vec.size()), default_value(default_value_) { evaluate = eval; row = 1; while((1<<row) < col) row += 1; row++; table = vector<vector<T>>(row, vector<T>(col, default_value)); set(vec); } void set(vector<T>& vec){ assert(col == vec.size()); values = &vec; vector<T>& val = vec; iota(table[0].begin(), table[0].end(), 0); for(int k=1; k<row; k++){ for(int i=0; i + (1<<k)-1 < col; i++){ T left = val[table[k-1][i]]; T right = val[table[k-1][i+(1<<(k-1))]]; if(left == evaluate(left,right)){ table[k][i] = table[k-1][i]; }else{ table[k][i] = table[k-1][i+(1<<(k-1))]; } } } } //[l,r) T get(int l, int r){ if(l>=r) return default_value; vector<T>& val = *values; T ret = default_value; int k = 0; while((1<<(k+1)) < (r-l)) k++; T left = val[ table[k][l] ]; T right = val[ table[k][r-(1<<k)] ]; ret = evaluate(left, right); return ret; } private: int col; int row; T default_value; vector<T>* values; vector<vector<T>> table; static T default_evaluate(T a, T b){ return min(a,b); } function<T(T,T)> evaluate; }; int main(){ int k; string s; cin >> k,s; if(k==0){ println(s); return 0; } int l = (s.size()+k)/(k+1); //l int t = s.size()%(k+1); //cnt l if(t==0){ vector<string> ss(k+1); for(int i=0; i<ss.size(); i++){ ss[i] = s.substr(i*l, l); } sort(ss.rbegin(), ss.rend()); println(*ss.begin()); return 0; } SuffixArray sa(s); SparseTable<int> st(sa.lcp); //sa.dbg_print(); vector<pair<int,int>> r; for(int i : range(sa.rank.size()-l)){ r.push_back({sa.rank[i], i}); } sort(r.begin(), r.end()); auto check = [&](int x){ int u = t; int v = k+1-t; int i; for(i=0; i<s.size();){ if(u && (sa.rank[i] <= r[x].first || st.get(r[x].first, sa.rank[i]) >= l)){ i += l; u--; }else{ if(v>0){ v--; i+=l-1; }else{ return false; } } } assert(i==s.size()); return true; }; long long lb = -1; long long ub = r.size()-1; while(ub-lb>1){ long long mid = (lb+ub)/2; bool ok = check(mid); (ok? ub : lb) = mid; } println( s.substr(r[ub].second, l) ); return 0; }
Submission Info
Submission Time | |
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Task | B - Problem where Commas Separate Digits |
User | koyumeishi |
Language | C++14 (GCC 5.4.1) |
Score | 1000 |
Code Size | 7895 Byte |
Status | AC |
Exec Time | 137 ms |
Memory | 10360 KB |
Judge Result
Set Name | Sample | Dataset1 | Dataset2 | Dataset3 | Dataset4 | Dataset5 | ||||||||||||
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Score / Max Score | 0 / 0 | 100 / 100 | 100 / 100 | 200 / 200 | 200 / 200 | 400 / 400 | ||||||||||||
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Set Name | Test Cases |
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Sample | subtask_02_ex1.txt, subtask_03_ex2.txt, subtask_03_ex3.txt |
Dataset1 | subtask_01_01.txt, subtask_01_02.txt, subtask_01_03.txt, subtask_01_04.txt, subtask_01_05.txt, subtask_01_06.txt, subtask_01_07.txt, subtask_01_08.txt, subtask_01_09.txt, subtask_01_10.txt, subtask_01_11.txt, subtask_01_12.txt, subtask_01_13.txt, subtask_01_14.txt, subtask_01_15.txt, subtask_01_16.txt, subtask_01_17.txt |
Dataset2 | subtask_01_01.txt, subtask_01_02.txt, subtask_01_03.txt, subtask_01_04.txt, subtask_01_05.txt, subtask_01_06.txt, subtask_01_07.txt, subtask_01_08.txt, subtask_01_09.txt, subtask_01_10.txt, subtask_01_11.txt, subtask_01_12.txt, subtask_01_13.txt, subtask_01_14.txt, subtask_01_15.txt, subtask_01_16.txt, subtask_01_17.txt, subtask_02_01.txt, subtask_02_02.txt, subtask_02_03.txt, subtask_02_04.txt, subtask_02_05.txt, subtask_02_06.txt, subtask_02_07.txt, subtask_02_08.txt, subtask_02_09.txt, subtask_02_10.txt, subtask_02_11.txt, subtask_02_12.txt, subtask_02_13.txt, subtask_02_14.txt, subtask_02_ex1.txt |
Dataset3 | subtask_01_01.txt, subtask_01_02.txt, subtask_01_03.txt, subtask_01_04.txt, subtask_01_05.txt, subtask_01_06.txt, subtask_01_07.txt, subtask_01_08.txt, subtask_01_09.txt, subtask_01_10.txt, subtask_01_11.txt, subtask_01_12.txt, subtask_01_13.txt, subtask_01_14.txt, subtask_01_15.txt, subtask_01_16.txt, subtask_01_17.txt, subtask_02_01.txt, subtask_02_02.txt, subtask_02_03.txt, subtask_02_04.txt, subtask_02_05.txt, subtask_02_06.txt, subtask_02_07.txt, subtask_02_08.txt, subtask_02_09.txt, subtask_02_10.txt, subtask_02_11.txt, subtask_02_12.txt, subtask_02_13.txt, subtask_02_14.txt, subtask_02_ex1.txt, subtask_03_01.txt, subtask_03_02.txt, subtask_03_03.txt, subtask_03_04.txt, subtask_03_05.txt, subtask_03_06.txt, subtask_03_07.txt, subtask_03_08.txt, subtask_03_09.txt, subtask_03_10.txt, subtask_03_11.txt, subtask_03_12.txt, subtask_03_13.txt, subtask_03_14.txt, subtask_03_15.txt, subtask_03_ex2.txt, subtask_03_ex3.txt |
Dataset4 | subtask_01_01.txt, subtask_01_02.txt, subtask_01_03.txt, subtask_01_04.txt, subtask_01_05.txt, subtask_01_06.txt, subtask_01_07.txt, subtask_01_08.txt, subtask_01_09.txt, subtask_01_10.txt, subtask_01_11.txt, subtask_01_12.txt, subtask_01_13.txt, subtask_01_14.txt, subtask_01_15.txt, subtask_01_16.txt, subtask_01_17.txt, subtask_02_01.txt, subtask_02_02.txt, subtask_02_03.txt, subtask_02_04.txt, subtask_02_05.txt, subtask_02_06.txt, subtask_02_07.txt, subtask_02_08.txt, subtask_02_09.txt, subtask_02_10.txt, subtask_02_11.txt, subtask_02_12.txt, subtask_02_13.txt, subtask_02_14.txt, subtask_02_ex1.txt, subtask_03_01.txt, subtask_03_02.txt, subtask_03_03.txt, subtask_03_04.txt, subtask_03_05.txt, subtask_03_06.txt, subtask_03_07.txt, subtask_03_08.txt, subtask_03_09.txt, subtask_03_10.txt, subtask_03_11.txt, subtask_03_12.txt, subtask_03_13.txt, subtask_03_14.txt, subtask_03_15.txt, subtask_03_ex2.txt, subtask_03_ex3.txt, subtask_04_01.txt, subtask_04_02.txt, subtask_04_03.txt, subtask_04_04.txt, subtask_04_05.txt, subtask_04_06.txt, subtask_04_07.txt, subtask_04_08.txt, subtask_04_09.txt, subtask_04_10.txt, subtask_04_11.txt, subtask_04_12.txt, subtask_04_13.txt, subtask_04_14.txt, subtask_04_15.txt |
Dataset5 | subtask_01_01.txt, subtask_01_02.txt, subtask_01_03.txt, subtask_01_04.txt, subtask_01_05.txt, subtask_01_06.txt, subtask_01_07.txt, subtask_01_08.txt, subtask_01_09.txt, subtask_01_10.txt, subtask_01_11.txt, subtask_01_12.txt, subtask_01_13.txt, subtask_01_14.txt, subtask_01_15.txt, subtask_01_16.txt, subtask_01_17.txt, subtask_02_01.txt, subtask_02_02.txt, subtask_02_03.txt, subtask_02_04.txt, subtask_02_05.txt, subtask_02_06.txt, subtask_02_07.txt, subtask_02_08.txt, subtask_02_09.txt, subtask_02_10.txt, subtask_02_11.txt, subtask_02_12.txt, subtask_02_13.txt, subtask_02_14.txt, subtask_02_ex1.txt, subtask_03_01.txt, subtask_03_02.txt, subtask_03_03.txt, subtask_03_04.txt, subtask_03_05.txt, subtask_03_06.txt, subtask_03_07.txt, subtask_03_08.txt, subtask_03_09.txt, subtask_03_10.txt, subtask_03_11.txt, subtask_03_12.txt, subtask_03_13.txt, subtask_03_14.txt, subtask_03_15.txt, subtask_03_ex2.txt, subtask_03_ex3.txt, subtask_04_01.txt, subtask_04_02.txt, subtask_04_03.txt, subtask_04_04.txt, subtask_04_05.txt, subtask_04_06.txt, subtask_04_07.txt, subtask_04_08.txt, subtask_04_09.txt, subtask_04_10.txt, subtask_04_11.txt, subtask_04_12.txt, subtask_04_13.txt, subtask_04_14.txt, subtask_04_15.txt, subtask_05_01.txt, subtask_05_02.txt, subtask_05_03.txt, subtask_05_04.txt, subtask_05_05.txt, subtask_05_06.txt, subtask_05_07.txt, subtask_05_08.txt, subtask_05_09.txt, subtask_05_10.txt, subtask_05_11.txt, subtask_05_12.txt, subtask_05_13.txt, subtask_05_14.txt, subtask_05_15.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
subtask_01_01.txt | AC | 3 ms | 256 KB |
subtask_01_02.txt | AC | 3 ms | 256 KB |
subtask_01_03.txt | AC | 3 ms | 256 KB |
subtask_01_04.txt | AC | 3 ms | 256 KB |
subtask_01_05.txt | AC | 3 ms | 256 KB |
subtask_01_06.txt | AC | 3 ms | 256 KB |
subtask_01_07.txt | AC | 3 ms | 256 KB |
subtask_01_08.txt | AC | 3 ms | 256 KB |
subtask_01_09.txt | AC | 3 ms | 256 KB |
subtask_01_10.txt | AC | 3 ms | 256 KB |
subtask_01_11.txt | AC | 3 ms | 256 KB |
subtask_01_12.txt | AC | 3 ms | 256 KB |
subtask_01_13.txt | AC | 3 ms | 256 KB |
subtask_01_14.txt | AC | 3 ms | 256 KB |
subtask_01_15.txt | AC | 3 ms | 256 KB |
subtask_01_16.txt | AC | 3 ms | 256 KB |
subtask_01_17.txt | AC | 3 ms | 256 KB |
subtask_02_01.txt | AC | 3 ms | 256 KB |
subtask_02_02.txt | AC | 3 ms | 256 KB |
subtask_02_03.txt | AC | 3 ms | 256 KB |
subtask_02_04.txt | AC | 3 ms | 256 KB |
subtask_02_05.txt | AC | 3 ms | 256 KB |
subtask_02_06.txt | AC | 3 ms | 256 KB |
subtask_02_07.txt | AC | 3 ms | 256 KB |
subtask_02_08.txt | AC | 3 ms | 256 KB |
subtask_02_09.txt | AC | 3 ms | 256 KB |
subtask_02_10.txt | AC | 3 ms | 256 KB |
subtask_02_11.txt | AC | 3 ms | 256 KB |
subtask_02_12.txt | AC | 3 ms | 256 KB |
subtask_02_13.txt | AC | 3 ms | 256 KB |
subtask_02_14.txt | AC | 3 ms | 256 KB |
subtask_02_ex1.txt | AC | 3 ms | 256 KB |
subtask_03_01.txt | AC | 3 ms | 256 KB |
subtask_03_02.txt | AC | 3 ms | 256 KB |
subtask_03_03.txt | AC | 3 ms | 256 KB |
subtask_03_04.txt | AC | 3 ms | 256 KB |
subtask_03_05.txt | AC | 3 ms | 256 KB |
subtask_03_06.txt | AC | 3 ms | 256 KB |
subtask_03_07.txt | AC | 3 ms | 256 KB |
subtask_03_08.txt | AC | 3 ms | 256 KB |
subtask_03_09.txt | AC | 3 ms | 256 KB |
subtask_03_10.txt | AC | 3 ms | 256 KB |
subtask_03_11.txt | AC | 3 ms | 256 KB |
subtask_03_12.txt | AC | 3 ms | 256 KB |
subtask_03_13.txt | AC | 3 ms | 256 KB |
subtask_03_14.txt | AC | 3 ms | 256 KB |
subtask_03_15.txt | AC | 3 ms | 256 KB |
subtask_03_ex2.txt | AC | 3 ms | 256 KB |
subtask_03_ex3.txt | AC | 3 ms | 256 KB |
subtask_04_01.txt | AC | 4 ms | 384 KB |
subtask_04_02.txt | AC | 4 ms | 384 KB |
subtask_04_03.txt | AC | 3 ms | 384 KB |
subtask_04_04.txt | AC | 3 ms | 256 KB |
subtask_04_05.txt | AC | 4 ms | 384 KB |
subtask_04_06.txt | AC | 3 ms | 256 KB |
subtask_04_07.txt | AC | 3 ms | 256 KB |
subtask_04_08.txt | AC | 3 ms | 256 KB |
subtask_04_09.txt | AC | 3 ms | 256 KB |
subtask_04_10.txt | AC | 4 ms | 384 KB |
subtask_04_11.txt | AC | 4 ms | 384 KB |
subtask_04_12.txt | AC | 4 ms | 384 KB |
subtask_04_13.txt | AC | 3 ms | 256 KB |
subtask_04_14.txt | AC | 3 ms | 256 KB |
subtask_04_15.txt | AC | 3 ms | 384 KB |
subtask_05_01.txt | AC | 136 ms | 10360 KB |
subtask_05_02.txt | AC | 137 ms | 10360 KB |
subtask_05_03.txt | AC | 34 ms | 5760 KB |
subtask_05_04.txt | AC | 22 ms | 3072 KB |
subtask_05_05.txt | AC | 113 ms | 10360 KB |
subtask_05_06.txt | AC | 16 ms | 1664 KB |
subtask_05_07.txt | AC | 14 ms | 1408 KB |
subtask_05_08.txt | AC | 6 ms | 512 KB |
subtask_05_09.txt | AC | 6 ms | 512 KB |
subtask_05_10.txt | AC | 116 ms | 10360 KB |
subtask_05_11.txt | AC | 107 ms | 10360 KB |
subtask_05_12.txt | AC | 96 ms | 10360 KB |
subtask_05_13.txt | AC | 84 ms | 8152 KB |
subtask_05_14.txt | AC | 104 ms | 9748 KB |
subtask_05_15.txt | AC | 43 ms | 4316 KB |