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Submission #839677

# Submission time Handle Problem Language Result Execution time Memory
839677 2023-08-30T12:17:40 Z kyaruru Pipes (CEOI15_pipes) C++17
10 / 100
 1238 ms 65536 KB 
#include <bits/stdc++.h>
 
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
 
vector<int> adj[100001];
vector<int> tin(100001,-1),low(100001,-1);
vector<pii> ans;
bool vi[100001];
int t=0;
 
 
void dfs(int x,int p=-1){
    vi[x]=true;
    tin[x]=t++;
  	low[x]=t;
    for(int u:adj[x]){
        if(u==p) continue;
        if(vi[u]){
            low[x]=min(low[x],tin[u]);
        }else{
            dfs(u,x);
            low[x]=min(low[x],low[u]);
            if(low[u]>tin[x]) cout<<u<<" "<<x<<endl;
        }
    }
}
 
int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);
 
    int a,b;
    cin>>a>>b;
 
    for(int i=0; i<b; i++){
        int x,y;
        cin>>x>>y;
        adj[x].push_back(y);
        adj[y].push_back(x);
    }
 
    for(int i=1; i<=a; i++){
        if(!vi[i]) dfs(i);
    }
}

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 3412 KB Output is correct
2 Incorrect 2 ms 3412 KB Wrong number of edges
3 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 3856 KB Output is correct
2 Incorrect 4 ms 3668 KB Wrong number of edges
3 Halted 0 ms 0 KB -

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 96 ms 11556 KB Output is correct
2 Correct 79 ms 10956 KB Output is correct

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 152 ms 14912 KB Output is correct
2 Runtime error 167 ms 19284 KB Memory limit exceeded
3 Halted 0 ms 0 KB -

Subtask #5
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 270 ms 25532 KB Memory limit exceeded
2 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 402 ms 30612 KB Memory limit exceeded
2 Halted 0 ms 0 KB -

Subtask #7
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 762 ms 52084 KB Memory limit exceeded
2 Halted 0 ms 0 KB -

Subtask #8
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 1002 ms 65536 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 1181 ms 65536 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 1238 ms 65536 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -