Submission #72896

#	Time	Username	Problem	Language	Result	Execution time	Memory
72896		FedericoS	Coins (IOI17_coins)	C++14	100 / 100	15 ms	1776 KiB

coins

#include <iostream>
#include "coins.h"
using namespace std;

std::vector<int> coin_flips(std::vector<int> b, int c) {

	vector<int> v;
	int ans=0;

    for(int i=0;i<64;i++)
    	ans^=b[i]*i;

    for(int i=0;i<64;i++)
    	if((ans^i)==c){
    		b[i]=(b[i]+1)%2;
    		v.push_back(i);
    		return v;
    	}

	return v;

}

int find_coin(std::vector<int> b) {
    int ans=0;
    for(int i=0;i<64;i++)
    	ans^=b[i]*i;
    return ans;
}

Compilation message (stderr)

coins.cpp: In function 'std::vector<int> coin_flips(std::vector<int>, int)':
coins.cpp:13:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
     for(int i=0;i<64;i++)
     ^~~
coins.cpp:20:2: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
  return v;
  ^~~~~~

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