제출 #516838

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
516838		Marslai24	Set (COCI21_set)	C++17	40 / 110	1079 ms	65164 KiB

Main

#include <bits/stdc++.h>
using namespace std;
#define int long long // a.k.a. TLE creator
#define all(x) x.begin(), x.end()
template<class A, class B> istream& operator >>(istream &o, pair<A, B> &x){return o >> x.first >> x.second;}
template<class A, class B> ostream& operator <<(ostream &o, pair<A, B> &x){return o << x.first << ' ' << x.second << ' ';}
void setIO(){ios::sync_with_stdio(false); cin.tie(0);}
const int INF = INT_MAX, MOD = 998244353, N = 1e5 + 2, K = __lg(N) + 1;

signed main(){
    setIO();
    int n, k;
    cin >> n >> k;
    vector<string> s(n);
    for(auto &i : s)cin >> i;
    map<string, int> cnt;
    for(int i = 0; i < n; i++){
        for(int j = i + 1; j < n; j++){
            string now(k, '0');
            for(int l = 0; l < k; l++){
                if(s[i][l] == s[j][l])now[l] = s[i][l];
                else{
                    for(char c = '1'; c <= '3'; c++){
                        if(s[i][l] != c && s[j][l] != c)now[l] = c;
                    }
                }
            }
            cnt[now]++;
        }
    }
    int ans = 0;
    for(auto i : s){
        ans += cnt[i];
    }
    cout << ans / 3;
}

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