oj.uz

Submission #784351

# Submission time Handle Problem Language Result Execution time Memory
784351 2023-07-16T03:31:43 Z andecaandeci Naboj (COCI22_naboj) C++17
110 / 110
 237 ms 21028 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
#define fi first
#define se second
#define pb push_back
#define TC int t; cin>>t; while(t--)
#define all(x) (x).begin(),(x).end()
//*AC BERSAMA ALLAH  FORTIS FORTUNA ADIUVAT

const ll sez = 2e5 + 5;
ll n,m; 
vector<pair<ll,ll> > arr;
vector<int> adj[sez], deg(sez,0), topo;
vector<bool> vis(sez,0);

void dfs(int u){
    if(vis[u]) return;
    vis[u]=1;
    topo.pb(u);
    for(auto i : adj[u]){
        deg[i]--;
        if(deg[i]==0) dfs(i);
    }
}

int main() {
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);

    cin>>n>>m;

    for(int i=1;i<=m;i++){
        int u,v; cin>>u>>v;
        adj[v].pb(u);
        deg[u]++;
    }
    for(int i=1;i<=n;i++){
        if(deg[i]==0 && !vis[i]){
            dfs(i);
        }
    }
    if(topo.size()!=n) cout<<"-1\n";
    else{
        cout<<topo.size()<<'\n';
        for(int i : topo){
            cout<<i<<' '<<1<<'\n';
        }
    }

    return 0;
}

Compilation message

naboj.cpp: In function 'int main()':
naboj.cpp:43:19: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'll' {aka 'long long int'} [-Wsign-compare]
   43 |     if(topo.size()!=n) cout<<"-1\n";
      |        ~~~~~~~~~~~^~~

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 5844 KB Output is correct
2 Correct 4 ms 5716 KB Output is correct
3 Correct 3 ms 5844 KB Output is correct
4 Correct 3 ms 5716 KB Output is correct
5 Correct 4 ms 5716 KB Output is correct
6 Correct 3 ms 5716 KB Output is correct
7 Correct 3 ms 5716 KB Output is correct
8 Correct 3 ms 5744 KB Output is correct
9 Correct 3 ms 5716 KB Output is correct
10 Correct 3 ms 5716 KB Output is correct
11 Correct 3 ms 5844 KB Output is correct
12 Correct 3 ms 5716 KB Output is correct
13 Correct 3 ms 5716 KB Output is correct
14 Correct 3 ms 5716 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 100 ms 12852 KB Output is correct
2 Correct 104 ms 15080 KB Output is correct
3 Correct 46 ms 10568 KB Output is correct
4 Correct 84 ms 15244 KB Output is correct
5 Correct 91 ms 15096 KB Output is correct
6 Correct 94 ms 15140 KB Output is correct
7 Correct 85 ms 15128 KB Output is correct
8 Correct 80 ms 12964 KB Output is correct
9 Correct 83 ms 15048 KB Output is correct
10 Correct 82 ms 15156 KB Output is correct

Subtask #3
70.0 / 70.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 5844 KB Output is correct
2 Correct 4 ms 5716 KB Output is correct
3 Correct 3 ms 5844 KB Output is correct
4 Correct 3 ms 5716 KB Output is correct
5 Correct 4 ms 5716 KB Output is correct
6 Correct 3 ms 5716 KB Output is correct
7 Correct 3 ms 5716 KB Output is correct
8 Correct 3 ms 5744 KB Output is correct
9 Correct 3 ms 5716 KB Output is correct
10 Correct 3 ms 5716 KB Output is correct
11 Correct 3 ms 5844 KB Output is correct
12 Correct 3 ms 5716 KB Output is correct
13 Correct 3 ms 5716 KB Output is correct
14 Correct 3 ms 5716 KB Output is correct
15 Correct 100 ms 12852 KB Output is correct
16 Correct 104 ms 15080 KB Output is correct
17 Correct 46 ms 10568 KB Output is correct
18 Correct 84 ms 15244 KB Output is correct
19 Correct 91 ms 15096 KB Output is correct
20 Correct 94 ms 15140 KB Output is correct
21 Correct 85 ms 15128 KB Output is correct
22 Correct 80 ms 12964 KB Output is correct
23 Correct 83 ms 15048 KB Output is correct
24 Correct 82 ms 15156 KB Output is correct
25 Correct 80 ms 15368 KB Output is correct
26 Correct 87 ms 15164 KB Output is correct
27 Correct 104 ms 16296 KB Output is correct
28 Correct 142 ms 17956 KB Output is correct
29 Correct 63 ms 14688 KB Output is correct
30 Correct 159 ms 17816 KB Output is correct
31 Correct 20 ms 7508 KB Output is correct
32 Correct 99 ms 17528 KB Output is correct
33 Correct 237 ms 20476 KB Output is correct
34 Correct 109 ms 17744 KB Output is correct
35 Correct 153 ms 20628 KB Output is correct
36 Correct 102 ms 17420 KB Output is correct
37 Correct 182 ms 19844 KB Output is correct
38 Correct 135 ms 18904 KB Output is correct
39 Correct 195 ms 20436 KB Output is correct
40 Correct 162 ms 19468 KB Output is correct
41 Correct 152 ms 19388 KB Output is correct
42 Correct 226 ms 20944 KB Output is correct
43 Correct 125 ms 17984 KB Output is correct
44 Correct 205 ms 21028 KB Output is correct
45 Correct 133 ms 17696 KB Output is correct
46 Correct 184 ms 19476 KB Output is correct