Submission #844569

#	Time	Username	Problem	Language	Result	Execution time	Memory
844569		vjudge1	Klasika (COCI20_klasika)	C++17	0 / 110	2 ms	856 KiB

klasika

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define endl "\n"
#define all(c) (c).begin(), (c).end()

const int N = 2e3 + 5;
vector<int> adj[N],xr(N);
int res;

void dfs(int node,int val){
	res = max(res,val ^ xr[node]);
	for(int go : adj[node]){
		dfs(go,val);
	}
}

void solve(){	

	int q;
	cin >> q;

	int cnt = 1;
	for(int i = 0; i < q; i++){
		string s; cin >> s;
		int x,y; cin >> x >> y;
		if(s[0] == 'A'){
			adj[x].push_back(++cnt);
			xr[cnt] = xr[x] ^ y;
		}
		else{
			res = 0;
			dfs(y,xr[x]);
			cout << res << endl;
		}
	}

}

signed main(){

	#ifndef ONLINE_JUDGE
		freopen("in.txt","r",stdin); freopen("out.txt","w",stdout);
	#endif

	ios_base::sync_with_stdio(0);
	cin.tie(0);

	int t = 1;
//	cin >> t;

	while(t--){
		solve();
	}

	return 0;
}

Compilation message (stderr)

klasika.cpp: In function 'int main()':
klasika.cpp:43:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   43 |   freopen("in.txt","r",stdin); freopen("out.txt","w",stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~
klasika.cpp:43:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   43 |   freopen("in.txt","r",stdin); freopen("out.txt","w",stdout);
      |                                ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 11
• Subtask 2: 0 / 22
• Subtask 3: 0 / 33
• Subtask 4: 0 / 44