# | Time | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
772305 | tolbi | Utrka (COCI14_utrka) | C++17 | 128 ms | 10332 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#pragma optimize("Bismillahirrahmanirrahim")
//█▀█─█──█──█▀█─█─█
//█▄█─█──█──█▄█─█■█
//█─█─█▄─█▄─█─█─█─█
//Allahuekber
//ahmet23 orz...
//Sani buyuk Osman Pasa Plevneden cikmam diyor
//FatihSultanMehmedHan
//YavuzSultanSelimHan
//AbdulhamidHan
#define author tolbi
#include <bits/stdc++.h>
#define deci(x) int x;cin>>x;
#define decstr(x) string x;cin>>x;
#define int long long
#define vint(x) vector<int> x
#define endl '\n'
#define cinarr(x) for (auto &it : x) cin>>it;
#define coutarr(x) for (auto &it : x) cout<<it<<" ";cout<<endl;
#define sortarr(x) sort(x.begin(), x.end())
#define sortrarr(x) sort(x.rbegin(), x.rend())
#define revarr(x) reverse(x.begin(), x.rend())
#define ios ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define tol(x) (1ll<<((int)(bi)))
#define det(x) cout<<"NO\0YES"+((!!x)*3)<<endl;
#define INF LONG_LONG_MAX
using namespace std;
const int MOD = 1e9+7;
mt19937 ayahya(chrono::high_resolution_clock().now().time_since_epoch().count());
int32_t main(){
ios;
int T = 1;
if (!T) cin>>T;
int tno = 0;
while (T-(tno++)){
deci(n);
map<string,int> mp;
for (int i = 0; i < n; ++i)
{
decstr(str);
mp[str]++;
}
for (int i = 0; i < n-1; ++i){
decstr(str);
mp[str]--;
if (!mp[str]) mp.erase(str);
}
for (auto it : mp){
cout<<it.first<<endl;
break;
}
}
}
Compilation message (stderr)
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