Submission #703511

#	Time	Username	Problem	Language	Result	Execution time	Memory
703511		Pacybwoah	Set (COCI21_set)	C++14	40 / 110	1040 ms	65196 KiB

Main

#include<iostream>
#include<vector>
#include<string>
#include<set>
using namespace std;
int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    int n,k;
    cin>>n>>k;
    vector<string> vec(n);
    for(int i=0;i<n;i++) cin>>vec[i];
    set<string> s;
    for(int i=0;i<n;i++) s.insert(vec[i]);
    int cnt=0;
    for(int i=0;i<n;i++){
        for(int j=i+1;j<n;j++){
            //s.erase(vec[i]);
            //s.erase(vec[j]);
            string tmp=vec[i];
            for(int l=0;l<k;l++){
                if(vec[i][l]==vec[j][l]){
                    tmp[l]=vec[i][l];
                }
                else {
                    tmp[l]=6-(vec[i][l]-'0')-(vec[j][l]-'0')+'0';
                }
            }
            if(s.count(tmp)) cnt++;
            //s.insert(vec[i]);
            //s.insert(vec[j]);
        }
    }
    cout<<cnt/3;
}

• Subtask 1: 10 / 10
• Subtask 2: 30 / 30
• Subtask 3: 0 / 70