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Submission #821355

# Submission time Handle Problem Language Result Execution time Memory
821355 2023-08-11T09:30:23 Z Denkata Marshmallow Molecules (CCO19_day2problem2) C++17
10 / 25
 887 ms 1048576 KB 
#include<bits/stdc++.h>
#pragma GCC optimize("Ofast")
#pragma GCC optimize("O3,unroll-loops")
using namespace std;
const int maxn = 1e5+3;
long long 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);
    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].empty())continue;
        ans+=s[i].size();
        p = *s[i].begin();s[i].erase(s[i].begin());
        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 2 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 4 ms 5204 KB Output is correct
4 Correct 3 ms 5204 KB Output is correct
5 Correct 3 ms 5204 KB Output is correct
6 Correct 3 ms 5204 KB Output is correct
7 Correct 3 ms 5204 KB Output is correct
8 Correct 3 ms 5204 KB Output is correct
9 Correct 3 ms 5204 KB Output is correct
10 Correct 3 ms 5204 KB Output is correct
11 Correct 3 ms 5224 KB Output is correct
12 Correct 4 ms 5204 KB Output is correct
13 Correct 3 ms 5204 KB Output is correct
14 Correct 5 ms 5204 KB Output is correct
15 Correct 3 ms 5204 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 4 ms 5204 KB Output is correct
4 Correct 3 ms 5204 KB Output is correct
5 Correct 3 ms 5204 KB Output is correct
6 Correct 3 ms 5204 KB Output is correct
7 Correct 3 ms 5204 KB Output is correct
8 Correct 3 ms 5204 KB Output is correct
9 Correct 3 ms 5204 KB Output is correct
10 Correct 3 ms 5204 KB Output is correct
11 Correct 3 ms 5224 KB Output is correct
12 Correct 4 ms 5204 KB Output is correct
13 Correct 3 ms 5204 KB Output is correct
14 Correct 5 ms 5204 KB Output is correct
15 Correct 3 ms 5204 KB Output is correct
16 Correct 606 ms 535856 KB Output is correct
17 Correct 565 ms 557400 KB Output is correct
18 Correct 593 ms 591776 KB Output is correct
19 Correct 592 ms 591692 KB Output is correct
20 Correct 618 ms 591660 KB Output is correct
21 Correct 465 ms 488680 KB Output is correct
22 Correct 795 ms 536676 KB Output is correct
23 Correct 572 ms 558144 KB Output is correct
24 Correct 598 ms 591688 KB Output is correct
25 Correct 659 ms 591684 KB Output is correct
26 Correct 667 ms 591684 KB Output is correct
27 Correct 444 ms 446404 KB Output is correct

Subtask #3
0 / 5.0

# Verdict Execution time Memory Grader output
1 Runtime error 887 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 2 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 4 ms 5204 KB Output is correct
4 Correct 3 ms 5204 KB Output is correct
5 Correct 3 ms 5204 KB Output is correct
6 Correct 3 ms 5204 KB Output is correct
7 Correct 3 ms 5204 KB Output is correct
8 Correct 3 ms 5204 KB Output is correct
9 Correct 3 ms 5204 KB Output is correct
10 Correct 3 ms 5204 KB Output is correct
11 Correct 3 ms 5224 KB Output is correct
12 Correct 4 ms 5204 KB Output is correct
13 Correct 3 ms 5204 KB Output is correct
14 Correct 5 ms 5204 KB Output is correct
15 Correct 3 ms 5204 KB Output is correct
16 Correct 606 ms 535856 KB Output is correct
17 Correct 565 ms 557400 KB Output is correct
18 Correct 593 ms 591776 KB Output is correct
19 Correct 592 ms 591692 KB Output is correct
20 Correct 618 ms 591660 KB Output is correct
21 Correct 465 ms 488680 KB Output is correct
22 Correct 795 ms 536676 KB Output is correct
23 Correct 572 ms 558144 KB Output is correct
24 Correct 598 ms 591688 KB Output is correct
25 Correct 659 ms 591684 KB Output is correct
26 Correct 667 ms 591684 KB Output is correct
27 Correct 444 ms 446404 KB Output is correct
28 Runtime error 887 ms 1048576 KB Execution killed with signal 9
29 Halted 0 ms 0 KB -