제출 #1046911

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1046911		12345678	Utrka (COCI14_utrka)	C++17	80 / 80	93 ms	12112 KiB

utrka

#include <bits/stdc++.h>

using namespace std;

#define ll long long

const ll mod=1e9+7, nx=1e5+5;

ll n, mul=31;
map<ll, pair<string, ll>> mp;
string s;

ll solve()
{
    ll sz=s.size(), res=0;
    for (int i=0; i<sz; i++) res=(res*mul)%mod, res+=s[i]-'a'+1;
    return res;
}

int main()
{
    cin.tie(NULL)->sync_with_stdio(false);
    cin>>n;
    for (int i=1; i<=n; i++) cin>>s, mp[solve()].first=s, mp[solve()].second++;
    for (int i=1; i<n; i++) cin>>s, mp[solve()].second--;
    for (auto [x, y]:mp) if (y.second!=0) cout<<y.first;
}

• Subtask 1: 80 / 80