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Submission #821361

# Submission time Handle Problem Language Result Execution time Memory
821361 2023-08-11T09:32:11 Z Denkata Marshmallow Molecules (CCO19_day2problem2) C++17
10 / 25
 785 ms 1048576 KB 
#include<bits/stdc++.h>
using namespace std;
const int maxn = 2e5+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);
    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].empty())continue;
        ans+=(long long)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 4 ms 9684 KB Output is correct
2 Correct 4 ms 9684 KB Output is correct
3 Correct 6 ms 9940 KB Output is correct
4 Correct 6 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 5 ms 9812 KB Output is correct
10 Correct 5 ms 9812 KB Output is correct
11 Correct 5 ms 9940 KB Output is correct
12 Correct 5 ms 9932 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 9812 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 6 ms 9940 KB Output is correct
4 Correct 6 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 5 ms 9812 KB Output is correct
10 Correct 5 ms 9812 KB Output is correct
11 Correct 5 ms 9940 KB Output is correct
12 Correct 5 ms 9932 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 9812 KB Output is correct
16 Correct 556 ms 540576 KB Output is correct
17 Correct 576 ms 562092 KB Output is correct
18 Correct 595 ms 596372 KB Output is correct
19 Correct 597 ms 596368 KB Output is correct
20 Correct 593 ms 596428 KB Output is correct
21 Correct 459 ms 493420 KB Output is correct
22 Correct 591 ms 541376 KB Output is correct
23 Correct 570 ms 562912 KB Output is correct
24 Correct 626 ms 596332 KB Output is correct
25 Correct 603 ms 596336 KB Output is correct
26 Correct 599 ms 596396 KB Output is correct
27 Correct 423 ms 451128 KB Output is correct

Subtask #3
0 / 5.0

# Verdict Execution time Memory Grader output
1 Runtime error 785 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 6 ms 9940 KB Output is correct
4 Correct 6 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 5 ms 9812 KB Output is correct
10 Correct 5 ms 9812 KB Output is correct
11 Correct 5 ms 9940 KB Output is correct
12 Correct 5 ms 9932 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 9812 KB Output is correct
16 Correct 556 ms 540576 KB Output is correct
17 Correct 576 ms 562092 KB Output is correct
18 Correct 595 ms 596372 KB Output is correct
19 Correct 597 ms 596368 KB Output is correct
20 Correct 593 ms 596428 KB Output is correct
21 Correct 459 ms 493420 KB Output is correct
22 Correct 591 ms 541376 KB Output is correct
23 Correct 570 ms 562912 KB Output is correct
24 Correct 626 ms 596332 KB Output is correct
25 Correct 603 ms 596336 KB Output is correct
26 Correct 599 ms 596396 KB Output is correct
27 Correct 423 ms 451128 KB Output is correct
28 Runtime error 785 ms 1048576 KB Execution killed with signal 9
29 Halted 0 ms 0 KB -