Submission #1198551

#	Time	Username	Problem	Language	Result	Execution time	Memory
1198551		brover29	Set (COCI21_set)	C++17	40 / 110	356 ms	22340 KiB

Main

#include <bits/stdc++.h>
//qwerty47924692
using namespace std;
using ll = long long;
const ll N=2e5+29;
const string br="617283";
#define sz(a)(ll)a.size()
#define f first
#define s second
ll n,k,ans;
string s[N];
map<string,ll>cnt;
int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);

    cin>>n>>k;
    for(ll i=1;i<=n;i++){
        cin>>s[i];
        cnt[s[i]]++;
    }for(ll i=1;i<=n;i++){
        for(ll j=i+1;j<=n;j++){
            string str;
            for(ll m=0;m<k;m++){
                if(s[i][m]==s[j][m]){
                    str+=s[i][m];
                }else{
                    str+=(6-(s[i][m]-'0')-(s[j][m]-'0'))+'0';
                }
            }
            ll x=cnt[str];
            if(s[i]==str)x--;
            if(s[j]==str)x--;
            ans+=x;
           // cout<<str<<'\n';
        }
    }
    cout<<ans/3;
}

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