Submission #1219166

#	Time	Username	Problem	Language	Result	Execution time	Memory
1219166		notarat40	Coins (IOI17_coins)	C++20	100 / 100	5 ms	768 KiB

coins

#include <bits/stdc++.h>

#define ll long long
#define ff first
#define ss second
#define begin begin()
#define end end()
#define loop(a,b,c,d) for(ll a=b; i<c; i+=d)

std::vector<int> coin_flips(std::vector<int> b, int c) {
    std::vector<int> flips(1);
    ll xor1=0;
        loop(i,0,64,1){
                if(b[i]==1){
                        xor1=xor1^i;
                }
        }
        xor1=xor1^c; 
        flips[0]=xor1; 
        
    return flips;
}

int find_coin(std::vector<int> b) {
    ll xor1=0;
         loop(i,0,64,1){
                if(b[i]==1){ 
                        xor1=xor1^i; 
                }
        }

    return xor1;
}

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