Submission #1141520

#	Time	Username	Problem	Language	Result	Execution time	Memory
1141520		Saul0906	Coins (IOI17_coins)	C++20	100 / 100	6 ms	584 KiB

coins

#include "coins.h"
#include <bits/stdc++.h>
#define pii pair<int, int>
#define rep(a,b,c) for(int a=b; a<c; a++)
#define repr(a,b,c) for(int a=b-1; a>c-1; a--)
#define repa(a,b) for(auto a:b)
#define all(a) a.begin(), a.end()
#define fi first
#define se second
#define mid ((l+r+1)>>1)
#define pb push_back

using namespace std;
using vi = vector<int>;


vi coin_flips(vi b, int c) {
	int x=0;
	rep(i,0,64) x^=(b[i]*i);
	return {x^c};
}

int find_coin(vi b) {
	int x=0;
	rep(i,0,64) x^=(b[i]*i);
	return x;
}

• Subtask 1: 10 / 10
• Subtask 2: 15 / 15
• Subtask 3: 10 / 10
• Subtask 4: 15 / 15
• Subtask 5: 50 / 50