oj.uz

Submission #718516

# Submission time Handle Problem Language Result Execution time Memory
718516 2023-04-04T09:15:21 Z Augustyn Naboj (COCI22_naboj) C++17
110 / 110
 286 ms 15212 KB 
#include<iostream>
#include<vector>
using namespace std;
int n,m;
vector<int>*pol;
bool *juzodw,*terodw;
int *stp_wch,*odp,it;
bool dfs(int t)
{
    juzodw[t]=1;
    terodw[t]=1;
    for(int i:pol[t])
    {
        if(terodw[i]==1)
            return 1;
        if(juzodw[i]==0)
            if(dfs(i))
                return 1;
    }
    terodw[t]=0;
    odp[++it]=t;
    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(it!=n)
    {
        printf("-1");
        return 0;
    }
    printf("%d\n",n);
    for(int i=1;i<=n;++i)
        printf("%d 0\n",odp[i]);
}

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 1 ms 340 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 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 1 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 131 ms 12808 KB Output is correct
2 Correct 128 ms 12748 KB Output is correct
3 Correct 74 ms 6860 KB Output is correct
4 Correct 96 ms 12860 KB Output is correct
5 Correct 103 ms 12784 KB Output is correct
6 Correct 103 ms 12812 KB Output is correct
7 Correct 104 ms 12808 KB Output is correct
8 Correct 77 ms 9964 KB Output is correct
9 Correct 107 ms 12840 KB Output is correct
10 Correct 150 ms 12780 KB Output is correct

Subtask #3
70.0 / 70.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 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 1 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 131 ms 12808 KB Output is correct
16 Correct 128 ms 12748 KB Output is correct
17 Correct 74 ms 6860 KB Output is correct
18 Correct 96 ms 12860 KB Output is correct
19 Correct 103 ms 12784 KB Output is correct
20 Correct 103 ms 12812 KB Output is correct
21 Correct 104 ms 12808 KB Output is correct
22 Correct 77 ms 9964 KB Output is correct
23 Correct 107 ms 12840 KB Output is correct
24 Correct 150 ms 12780 KB Output is correct
25 Correct 144 ms 8716 KB Output is correct
26 Correct 100 ms 11216 KB Output is correct
27 Correct 167 ms 11656 KB Output is correct
28 Correct 189 ms 12232 KB Output is correct
29 Correct 93 ms 10704 KB Output is correct
30 Correct 156 ms 12072 KB Output is correct
31 Correct 21 ms 1648 KB Output is correct
32 Correct 124 ms 14896 KB Output is correct
33 Correct 226 ms 15068 KB Output is correct
34 Correct 149 ms 14824 KB Output is correct
35 Correct 197 ms 15076 KB Output is correct
36 Correct 125 ms 14788 KB Output is correct
37 Correct 230 ms 14988 KB Output is correct
38 Correct 231 ms 14840 KB Output is correct
39 Correct 235 ms 15076 KB Output is correct
40 Correct 229 ms 14928 KB Output is correct
41 Correct 216 ms 14944 KB Output is correct
42 Correct 286 ms 15184 KB Output is correct
43 Correct 156 ms 14824 KB Output is correct
44 Correct 280 ms 15212 KB Output is correct
45 Correct 175 ms 14880 KB Output is correct
46 Correct 199 ms 14904 KB Output is correct