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Submission #821259

# Submission time Handle Problem Language Result Execution time Memory
821259 2023-08-11T08:30:59 Z alexander707070 Marshmallow Molecules (CCO19_day2problem2) C++14
0 / 25
 43 ms 6728 KB 
#include<bits/stdc++.h>
#define MAXN 100007
using namespace std;

int n,m,a[MAXN],b[MAXN],ans,br[MAXN];
vector<int> lines[MAXN];

int main(){
    
    cin>>n>>m;
    for(int i=1;i<=m;i++){
        cin>>a[i]>>b[i];
        lines[b[i]].push_back(a[i]);
    }

    for(int i=1;i<=n;i++){
        for(int f=0;f<lines[i].size();f++){
            ans+=br[lines[i][f]];
        }
        for(int f=0;f<lines[i].size();f++){
            br[lines[i][f]]++;
        }
    }

    cout<<ans+m<<"\n";

    return 0;
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:17:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |         for(int f=0;f<lines[i].size();f++){
      |                     ~^~~~~~~~~~~~~~~~
Main.cpp:20:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |         for(int f=0;f<lines[i].size();f++){
      |                     ~^~~~~~~~~~~~~~~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Incorrect 1 ms 2644 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Incorrect 1 ms 2644 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 43 ms 6728 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Incorrect 1 ms 2644 KB Output isn't correct
3 Halted 0 ms 0 KB -