Submission #520359

#	Time	Username	Problem	Language	Result	Execution time	Memory
520359		amunduzbaev	Football (info1cup20_football)	C++14	26 / 100	25 ms	716 KiB

football

#include "bits/stdc++.h"
using namespace std;

#define ar array

const int N = 105;
int dp[N][N];

void solve(){
	int n, k; cin>>n>>k;
	vector<int> a(n);
	for(int i=0;i<n;i++) cin>>a[i];
	int res = 0;
	
	if(k == 1){
		for(int i=0;i<n;i++){
			res ^= (a[i] & 1);
		}
	} else {
		for(int i=0;i<n;i++){
			if(k <= a[i]) res ^= dp[a[i]][k, a[i]];
			else {
				res ^= a[i];
			}
		}
	}
	
	if(res) cout<<1;
	else cout<<0;
}

signed main(){
	ios::sync_with_stdio(0); cin.tie(0);
	
	dp[0][0] = 0;
	for(int i=1;i<N;i++){
		for(int j=1;j<=i;j++){
			vector<int> tt;
			for(int l=1;l<=j;l++){
				tt.push_back(dp[i-l][min(i-l, l)]);
			}
			sort(tt.begin(), tt.end());
			int last = 0;
			for(auto x : tt){
				if(x > last) break;
				if(x == last) last++;
			}
			
			dp[i][j] = last;
		}
	}
	
	int t; cin>>t;
	while(t--){
		solve();
	}
}

Compilation message (stderr)

football.cpp: In function 'void solve()':
football.cpp:21:34: warning: left operand of comma operator has no effect [-Wunused-value]
   21 |    if(k <= a[i]) res ^= dp[a[i]][k, a[i]];
      |                                  ^

• Subtask 1: 26 / 26
• Subtask 2: 0 / 8
• Subtask 3: 0 / 11
• Subtask 4: 0 / 8
• Subtask 5: 0 / 16
• Subtask 6: 0 / 16
• Subtask 7: 0 / 7
• Subtask 8: 0 / 8