oj.uz

Submission #704910

# Submission time Handle Problem Language Result Execution time Memory
704910 2023-03-03T06:41:18 Z guagua0407 Naboj (COCI22_naboj) C++17
0 / 110
 123 ms 19376 KB 
#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define f first
#define s second
#define all(x) x.begin(),x.end()

int main(){
    ios::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    int n,m;
    cin>>n>>m;
    vector<int> in(n,0);
    vector<bool> visited(n,false);
    vector<int> adj[n],adjr[n];
    for(int i=0;i<m;i++){
        int a,b;
        cin>>a>>b;
        a--;
        b--;
        in[a]++;
        adj[b].push_back(a);
    }
    queue<int> q;
    for(int i=0;i<n;i++){
        if(in[i]==0) q.push(i);
    }
    vector<pair<int,int>> ans;
    while(!q.empty()){
        int v=q.front();
        q.pop();
        visited[v]=true;
        ans.push_back({v,0});
        for(auto u:adj[v]){
            if(visited[u]){
                cout<<-1;
                return 0;
            }
            in[u]--;
            if(in[u]==0){
                q.push(u);
            }
        }
    }
    reverse(all(ans));
    for(auto v:ans){
        cout<<v.f+1<<' '<<v.s<<'\n';
    }
}

Subtask #1
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Integer parameter [name=c] equals to 0, violates the range [1, 9]
2 Halted 0 ms 0 KB -

Subtask #2
0 / 25.0

# Verdict Execution time Memory Grader output
1 Incorrect 123 ms 19376 KB Integer parameter [name=c] equals to 0, violates the range [1, 200000]
2 Halted 0 ms 0 KB -

Subtask #3
0 / 70.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Integer parameter [name=c] equals to 0, violates the range [1, 9]
2 Halted 0 ms 0 KB -