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Submission #821368

# Submission time Handle Problem Language Result Execution time Memory
821368 2023-08-11T09:36:18 Z Denkata Marshmallow Molecules (CCO19_day2problem2) C++14
10 / 25
 805 ms 1048576 KB 
#include<bits/stdc++.h>
using namespace std;
const int maxn = 2e5+3;
int i,j,p,q,n,m,k;
long long ans;
set <int> s[maxn];
set <int> Merge(set <int> a,set <int> b)
{
    if(a.size()<b.size())
        swap(a,b);
    if(b.empty())
        return a;
    a.insert(b.begin(),b.end());
    return a;
}
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    cin>>n>>m;
    for(i=1;i<=m;i++)
    {
        cin>>p>>q;
        s[p].insert(q);
    }
    for(i=1;i<=n;i++)
    {
        if(s[i].size()==0)continue;
        ans+=(long long)s[i].size();
        p = *s[i].begin();s[i].erase(p);
        if(s[i].size()==0)continue;
        s[p] = Merge(s[i],s[p]);
    }
    cout<<ans<<endl;
    return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 9684 KB Output is correct
2 Correct 4 ms 9684 KB Output is correct
3 Correct 5 ms 9920 KB Output is correct
4 Correct 5 ms 9812 KB Output is correct
5 Correct 5 ms 9812 KB Output is correct
6 Correct 5 ms 9940 KB Output is correct
7 Correct 5 ms 9940 KB Output is correct
8 Correct 5 ms 9940 KB Output is correct
9 Correct 4 ms 9812 KB Output is correct
10 Correct 5 ms 9940 KB Output is correct
11 Correct 5 ms 9940 KB Output is correct
12 Correct 5 ms 9940 KB Output is correct
13 Correct 5 ms 9940 KB Output is correct
14 Correct 5 ms 9940 KB Output is correct
15 Correct 5 ms 9888 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 9684 KB Output is correct
2 Correct 4 ms 9684 KB Output is correct
3 Correct 5 ms 9920 KB Output is correct
4 Correct 5 ms 9812 KB Output is correct
5 Correct 5 ms 9812 KB Output is correct
6 Correct 5 ms 9940 KB Output is correct
7 Correct 5 ms 9940 KB Output is correct
8 Correct 5 ms 9940 KB Output is correct
9 Correct 4 ms 9812 KB Output is correct
10 Correct 5 ms 9940 KB Output is correct
11 Correct 5 ms 9940 KB Output is correct
12 Correct 5 ms 9940 KB Output is correct
13 Correct 5 ms 9940 KB Output is correct
14 Correct 5 ms 9940 KB Output is correct
15 Correct 5 ms 9888 KB Output is correct
16 Correct 544 ms 540528 KB Output is correct
17 Correct 636 ms 562072 KB Output is correct
18 Correct 595 ms 596452 KB Output is correct
19 Correct 604 ms 596360 KB Output is correct
20 Correct 638 ms 596388 KB Output is correct
21 Correct 457 ms 493468 KB Output is correct
22 Correct 544 ms 541436 KB Output is correct
23 Correct 564 ms 562840 KB Output is correct
24 Correct 598 ms 596432 KB Output is correct
25 Correct 604 ms 596420 KB Output is correct
26 Correct 642 ms 596388 KB Output is correct
27 Correct 409 ms 451064 KB Output is correct

Subtask #3
0 / 5.0

# Verdict Execution time Memory Grader output
1 Runtime error 805 ms 1048576 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 9684 KB Output is correct
2 Correct 4 ms 9684 KB Output is correct
3 Correct 5 ms 9920 KB Output is correct
4 Correct 5 ms 9812 KB Output is correct
5 Correct 5 ms 9812 KB Output is correct
6 Correct 5 ms 9940 KB Output is correct
7 Correct 5 ms 9940 KB Output is correct
8 Correct 5 ms 9940 KB Output is correct
9 Correct 4 ms 9812 KB Output is correct
10 Correct 5 ms 9940 KB Output is correct
11 Correct 5 ms 9940 KB Output is correct
12 Correct 5 ms 9940 KB Output is correct
13 Correct 5 ms 9940 KB Output is correct
14 Correct 5 ms 9940 KB Output is correct
15 Correct 5 ms 9888 KB Output is correct
16 Correct 544 ms 540528 KB Output is correct
17 Correct 636 ms 562072 KB Output is correct
18 Correct 595 ms 596452 KB Output is correct
19 Correct 604 ms 596360 KB Output is correct
20 Correct 638 ms 596388 KB Output is correct
21 Correct 457 ms 493468 KB Output is correct
22 Correct 544 ms 541436 KB Output is correct
23 Correct 564 ms 562840 KB Output is correct
24 Correct 598 ms 596432 KB Output is correct
25 Correct 604 ms 596420 KB Output is correct
26 Correct 642 ms 596388 KB Output is correct
27 Correct 409 ms 451064 KB Output is correct
28 Runtime error 805 ms 1048576 KB Execution killed with signal 9
29 Halted 0 ms 0 KB -