Submission #260166

#	Time	Username	Problem	Language	Result	Execution time	Memory
260166		Hehehe	Coins (IOI17_coins)	C++14	100 / 100	15 ms	1900 KiB

coins

#include<bits/stdc++.h> //:3
using namespace std;
typedef long long ll;
#define all(a) (a).begin(), (a).end()
#define ff first
#define ss second
#define pb push_back
#define mp make_pair
#define pi pair<int, int>
#define sz(x) (int)((x).size())
#include "coins.h"

const int dx[] = {0, 1, 0, -1};
const int dy[] = {1, 0, -1, 0};

const ll inf = 2e9;
const ll mod = 1e9 + 7;
const int N = 2e3 + 11;
const ll INF64 = 3e18 + 1;
const double eps = 1e-14;
const double PI = acos(-1);

vector<int> coin_flips(vector<int> b, int c){
    int x = 0;
    for(int i = 0; i < 64; i++){
        if(b[i]) x ^= i;
    }
    vector<int>X;
    X.push_back(x ^ c);
    return X;
}

int find_coin(vector<int> b){
    int x = 0;
    for(int i = 0; i < 64; i++){
        if(b[i]) x ^= i;
    }
    return x;
}

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