oj.uz

Submission #704932

# Submission time Handle Problem Language Result Execution time Memory
704932 2023-03-03T06:56:26 Z Cookie197 Naboj (COCI22_naboj) C++17
110 / 110
 243 ms 15228 KB 
#pragma GCC optimize("O4,unroll-loops")
#include<iostream>
#include<vector>
#include<algorithm>
#include<set>
#include<queue>
using namespace std;
#define ll long long
#define pii pair<int,int>
#define endl "\n"
#define mp make_pair
#define out(x) cout << #x << " = " << x << endl

int n,m,deg[200005],tag[200005];
vector<int> adj[200005];
signed main(){
    ios::sync_with_stdio(false); cin.tie(0); cout.tie(0);
    cin>>n>>m;
    for (int i=1;i<=m;i++){
        int a,b; cin>>a>>b;
        adj[b].push_back(a);
        deg[a]++;
    }

    queue<int> q; vector<int> ans;
    for (int i=1;i<=n;i++) if (deg[i] == 0) q.push(i);
    while(q.size()){
        int node = q.front();
        q.pop();
        ans.push_back(node);
        for (int u:adj[node]){
            deg[u]--;
            if (deg[u] == 0) q.push(u);
        }
    }

    if (ans.size() == n){
        cout<<n<<endl;
        for (int u:ans) cout<<u<<" "<<1<<endl;
    }else cout<<-1<<endl;
}

Compilation message

naboj.cpp: In function 'int main()':
naboj.cpp:37:20: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   37 |     if (ans.size() == n){
      |         ~~~~~~~~~~~^~~~

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 4 ms 5008 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 3 ms 4948 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 3 ms 5000 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 106 ms 13084 KB Output is correct
2 Correct 110 ms 12800 KB Output is correct
3 Correct 63 ms 9144 KB Output is correct
4 Correct 105 ms 12868 KB Output is correct
5 Correct 111 ms 12860 KB Output is correct
6 Correct 113 ms 12856 KB Output is correct
7 Correct 102 ms 12884 KB Output is correct
8 Correct 82 ms 11060 KB Output is correct
9 Correct 131 ms 12812 KB Output is correct
10 Correct 111 ms 12892 KB Output is correct

Subtask #3
70.0 / 70.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 4 ms 5008 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 3 ms 4948 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 3 ms 5000 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct
15 Correct 106 ms 13084 KB Output is correct
16 Correct 110 ms 12800 KB Output is correct
17 Correct 63 ms 9144 KB Output is correct
18 Correct 105 ms 12868 KB Output is correct
19 Correct 111 ms 12860 KB Output is correct
20 Correct 113 ms 12856 KB Output is correct
21 Correct 102 ms 12884 KB Output is correct
22 Correct 82 ms 11060 KB Output is correct
23 Correct 131 ms 12812 KB Output is correct
24 Correct 111 ms 12892 KB Output is correct
25 Correct 115 ms 10220 KB Output is correct
26 Correct 114 ms 11588 KB Output is correct
27 Correct 132 ms 11728 KB Output is correct
28 Correct 171 ms 12032 KB Output is correct
29 Correct 93 ms 11776 KB Output is correct
30 Correct 159 ms 11976 KB Output is correct
31 Correct 20 ms 5920 KB Output is correct
32 Correct 125 ms 15016 KB Output is correct
33 Correct 243 ms 15192 KB Output is correct
34 Correct 137 ms 14972 KB Output is correct
35 Correct 214 ms 15168 KB Output is correct
36 Correct 115 ms 15056 KB Output is correct
37 Correct 206 ms 15068 KB Output is correct
38 Correct 168 ms 14992 KB Output is correct
39 Correct 229 ms 15116 KB Output is correct
40 Correct 185 ms 14916 KB Output is correct
41 Correct 171 ms 15056 KB Output is correct
42 Correct 213 ms 15228 KB Output is correct
43 Correct 150 ms 14956 KB Output is correct
44 Correct 217 ms 15144 KB Output is correct
45 Correct 129 ms 14996 KB Output is correct
46 Correct 195 ms 14956 KB Output is correct