Submission #1034821
Source Code Expand
#include <bits/stdc++.h>
using namespace std;
#define REP(i,a,b) for(int i=a;i<(int)b;i++)
#define rep(i,n) REP(i,0,n)
#define all(c) (c).begin(), (c).end()
#define zero(a) memset(a, 0, sizeof a)
#define minus(a) memset(a, -1, sizeof a)
#define watch(a) { cout << #a << " = " << a << endl; }
template<class T1, class T2> inline bool minimize(T1 &a, T2 b) { return b < a && (a = b, 1); }
template<class T1, class T2> inline bool maximize(T1 &a, T2 b) { return a < b && (a = b, 1); }
template<class T> void operator>> (istream& ist, vector<T>& vs) { for(auto& e: vs) cin >> e; }
typedef long long ll;
int const inf = 1<<29;
namespace tree {
struct union_find {
vector<int> par, rank, size;
int compnum;
union_find(int N) {
compnum = N;
par.resize(N), rank.resize(N), size.resize(N);
for(int i=0; i<N; i++) {
par[i] = i;
rank[i] = 0;
size[i] = 1;
}
}
int root(int x) {
return par[x] == x ? x : par[x] = root(par[x]);
}
void unite(int x, int y) {
x = root(x), y = root(y);
if(x == y) return;
if(rank[x] < rank[y]) {
par[x] = y, size[y] += size[x];
} else {
par[y] = x, size[x] += size[y];
if(rank[x] == rank[y]) rank[x]++;
}
compnum--;
}
int operator[](int x) { return root(x); }
void operator()(int x, int y) { return unite(x, y); }
bool same(int x, int y) { return root(x) == root(y); }
int size_of(int x) { return size[root(x)]; }
int num_of_comps() { return compnum; }
};
}
int dist[4000][4000];
vector<pair<int, int>> G[4000];
tuple<int, int, int> es[4000];
void dfs(int curr, int par, int start, int max) {
dist[curr][start] = max;
for(auto const& e: G[curr]) {
if(e.first != par) dfs(e.first, curr, start, std::max(max, e.second));
}
};
int main() {
int N, M; cin >> N >> M;
rep(i, M) {
int a, b, c; scanf("%d%d%d", &a, &b, &c);
a--, b--;
es[i] = make_tuple(c, a, b);
G[a].push_back({b, c});
G[b].push_back({a, c});
}
sort(es, es+N);
tree::union_find uf(N);
ll rawMSTWeight = 0;
rep(i, M) {
int a, b, c; tie(c, a, b) = es[i];
if(!uf.same(a, b)) {
uf.unite(a, b);
rawMSTWeight += c;
}
}
rep(i, N) {
dfs(i, -1, i, 0);
}
int Q; cin >> Q;
rep(i, Q) {
int s, t; scanf("%d%d", &s, &t); s--, t--;
cout << rawMSTWeight - dist[s][t] << endl;
}
return 0;
}
Submission Info
Submission Time
2016-12-21 06:11:14+0900
Task
A - Graph
User
motxx
Language
C++14 (GCC 5.4.1)
Score
0
Code Size
2477 Byte
Status
WA
Exec Time
3165 ms
Memory
262528 KB
Compile Error
./Main.cpp: In function ‘int main()’:
./Main.cpp:74:45: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
int a, b, c; scanf("%d%d%d", &a, &b, &c);
^
./Main.cpp:101:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
int s, t; scanf("%d%d", &s, &t); s--, t--;
^
Judge Result
Set Name
Sample
subtask1
subtask2
All
Score / Max Score
0 / 0
0 / 200
0 / 300
0 / 200
Status
WA
× 2
TLE
× 1
MLE
× 2
RE
× 7
WA
× 4
TLE
× 1
MLE
× 2
RE
× 14
WA
× 5
TLE
× 1
MLE
× 2
RE
× 21
Set Name
Test Cases
Sample
sample_1.txt, sample_2.txt
subtask1
sample_2.txt, subtask_1_1.txt, subtask_1_10.txt, subtask_1_11.txt, subtask_1_2.txt, subtask_1_3.txt, subtask_1_4.txt, subtask_1_5.txt, subtask_1_6.txt, subtask_1_7.txt, subtask_1_8.txt, subtask_1_9.txt
subtask2
sample_1.txt, sample_2.txt, subtask_1_1.txt, subtask_1_10.txt, subtask_1_11.txt, subtask_1_2.txt, subtask_1_3.txt, subtask_1_4.txt, subtask_1_5.txt, subtask_1_6.txt, subtask_1_7.txt, subtask_1_8.txt, subtask_1_9.txt, subtask_2_1.txt, subtask_2_2.txt, subtask_2_3.txt, subtask_2_4.txt, subtask_2_5.txt, subtask_2_6.txt, subtask_2_7.txt, subtask_2_8.txt
All
sample_1.txt, sample_2.txt, subtask_1_1.txt, subtask_1_10.txt, subtask_1_11.txt, subtask_1_2.txt, subtask_1_3.txt, subtask_1_4.txt, subtask_1_5.txt, subtask_1_6.txt, subtask_1_7.txt, subtask_1_8.txt, subtask_1_9.txt, subtask_2_1.txt, subtask_2_2.txt, subtask_2_3.txt, subtask_2_4.txt, subtask_2_5.txt, subtask_2_6.txt, subtask_2_7.txt, subtask_2_8.txt, subtask_3_1.txt, subtask_3_2.txt, subtask_3_3.txt, subtask_3_4.txt, subtask_3_5.txt, subtask_3_6.txt, subtask_3_7.txt, subtask_3_8.txt
Case Name
Status
Exec Time
Memory
sample_1.txt
WA
3 ms
384 KB
sample_2.txt
MLE
442 ms
262528 KB
subtask_1_1.txt
MLE
432 ms
262528 KB
subtask_1_10.txt
RE
113 ms
512 KB
subtask_1_11.txt
WA
3 ms
384 KB
subtask_1_2.txt
RE
113 ms
512 KB
subtask_1_3.txt
RE
113 ms
512 KB
subtask_1_4.txt
TLE
3165 ms
122496 KB
subtask_1_5.txt
RE
113 ms
512 KB
subtask_1_6.txt
RE
113 ms
512 KB
subtask_1_7.txt
RE
113 ms
512 KB
subtask_1_8.txt
WA
419 ms
63104 KB
subtask_1_9.txt
RE
113 ms
512 KB
subtask_2_1.txt
RE
113 ms
512 KB
subtask_2_2.txt
RE
113 ms
512 KB
subtask_2_3.txt
RE
113 ms
512 KB
subtask_2_4.txt
RE
113 ms
512 KB
subtask_2_5.txt
WA
432 ms
63104 KB
subtask_2_6.txt
RE
113 ms
512 KB
subtask_2_7.txt
RE
113 ms
512 KB
subtask_2_8.txt
RE
113 ms
512 KB
subtask_3_1.txt
RE
113 ms
512 KB
subtask_3_2.txt
RE
113 ms
512 KB
subtask_3_3.txt
WA
886 ms
64384 KB
subtask_3_4.txt
RE
113 ms
512 KB
subtask_3_5.txt
RE
113 ms
512 KB
subtask_3_6.txt
RE
113 ms
512 KB
subtask_3_7.txt
RE
113 ms
512 KB
subtask_3_8.txt
RE
113 ms
512 KB