oj.uz

Submission #718504

# Submission time Handle Problem Language Result Execution time Memory
718504 2023-04-04T09:05:30 Z Augustyn Naboj (COCI22_naboj) C++17
110 / 110
 296 ms 21328 KB 
#include<iostream>
#include<vector>
using namespace std;
int n,m;
vector<int>*pol;
bool *juzodw,*terodw;
int *stp_wch,*odp,iter;
bool dfs(int ter)
{
    juzodw[ter]=1;
    terodw[ter]=1;
    for(auto i:pol[ter])
    {
        if(terodw[i]==1)
            return 1;
        if(juzodw[i]==0)
            if(dfs(i))
                return 1;
    }
    terodw[ter]=0;
    odp[++iter]=ter;
    return 0;
}
int main()
{
    scanf("%d%d",&n,&m);
    pol=new vector<int>[n+1];
    juzodw=new bool[n+1];
    terodw=new bool[n+1];
    odp=new int[n+1];
    stp_wch=new int[n+1];
    while(m)
    {
        --m;
        int a,b;
        scanf("%d%d",&a,&b);
        pol[b].push_back(a);
        stp_wch[a]++;
    }
    for(int i=1;i<=n;++i)
        if(stp_wch[i]==0)
            if(dfs(i))
            {
                printf("-1");
                return 0;
            }
    if(iter!=n)
    {
        printf("-1");
        return 0;
    }
    printf("%d\n",n);
    for(int i=1;i<=n;++i)
        printf("%d 0\n",odp[i]);
    return 0;
}

Compilation message

naboj.cpp: In function 'int main()':
naboj.cpp:26:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   26 |     scanf("%d%d",&n,&m);
      |     ~~~~~^~~~~~~~~~~~~~
naboj.cpp:36:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   36 |         scanf("%d%d",&a,&b);
      |         ~~~~~^~~~~~~~~~~~~~

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 300 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 304 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 114 ms 15424 KB Output is correct
2 Correct 137 ms 15260 KB Output is correct
3 Correct 54 ms 8016 KB Output is correct
4 Correct 130 ms 15280 KB Output is correct
5 Correct 127 ms 15256 KB Output is correct
6 Correct 120 ms 15324 KB Output is correct
7 Correct 114 ms 15352 KB Output is correct
8 Correct 111 ms 11884 KB Output is correct
9 Correct 115 ms 15320 KB Output is correct
10 Correct 107 ms 15364 KB Output is correct

Subtask #3
70.0 / 70.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 300 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 304 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 114 ms 15424 KB Output is correct
16 Correct 137 ms 15260 KB Output is correct
17 Correct 54 ms 8016 KB Output is correct
18 Correct 130 ms 15280 KB Output is correct
19 Correct 127 ms 15256 KB Output is correct
20 Correct 120 ms 15324 KB Output is correct
21 Correct 114 ms 15352 KB Output is correct
22 Correct 111 ms 11884 KB Output is correct
23 Correct 115 ms 15320 KB Output is correct
24 Correct 107 ms 15364 KB Output is correct
25 Correct 154 ms 13648 KB Output is correct
26 Correct 128 ms 14968 KB Output is correct
27 Correct 162 ms 16240 KB Output is correct
28 Correct 223 ms 18036 KB Output is correct
29 Correct 93 ms 13900 KB Output is correct
30 Correct 195 ms 17952 KB Output is correct
31 Correct 21 ms 2584 KB Output is correct
32 Correct 127 ms 17688 KB Output is correct
33 Correct 231 ms 20720 KB Output is correct
34 Correct 195 ms 17916 KB Output is correct
35 Correct 296 ms 20816 KB Output is correct
36 Correct 109 ms 17624 KB Output is correct
37 Correct 210 ms 20112 KB Output is correct
38 Correct 162 ms 19276 KB Output is correct
39 Correct 235 ms 20612 KB Output is correct
40 Correct 179 ms 19716 KB Output is correct
41 Correct 193 ms 19660 KB Output is correct
42 Correct 248 ms 21328 KB Output is correct
43 Correct 139 ms 18380 KB Output is correct
44 Correct 204 ms 21324 KB Output is correct
45 Correct 130 ms 17900 KB Output is correct
46 Correct 206 ms 19712 KB Output is correct