Submission #821141

#	Time	Username	Problem	Language	Result	Execution time	Memory
821141		alexander707070	Marshmallow Molecules (CCO19_day2problem2)	C++14	5 / 25	4045 ms	85512 KiB

Main

#include<bits/stdc++.h>
#define MAXN 100007
using namespace std;

int n,m,a[MAXN],b[MAXN],ans;
bool between[5007][5007];
vector<int> lines[MAXN];

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

    for(int i=1;i<=n;i++){
        sort(lines[i].begin(),lines[i].end());
        for(int f=0;f<lines[i].size();f++){
            for(int k=f+1;k<lines[i].size();k++){
                if(!between[lines[i][f]][lines[i][k]]){
                    ans++;
                    between[lines[i][f]][lines[i][k]]=true;
                    lines[lines[i][f]].push_back(lines[i][k]);
                }
            }
        }
    }

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

    return 0;
}


 

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:14:27: warning: use of an operand of type 'bool' in 'operator++' is deprecated [-Wdeprecated]
   14 |         between[a[i]][b[i]]++;
      |         ~~~~~~~~~~~~~~~~~~^
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++){
      |                     ~^~~~~~~~~~~~~~~~
Main.cpp:21:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |             for(int k=f+1;k<lines[i].size();k++){
      |                           ~^~~~~~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 0 / 5
• Subtask 3: 0 / 5
• Subtask 4: 0 / 10