Submission #580829

#	Time	Username	Problem	Language	Result	Execution time	Memory
580829		HeyYouNotYouYou	Coins (IOI17_coins)	C++14	100 / 100	10 ms	1408 KiB

coins

#include "coins.h"
//#include "grader.cpp"
#include<bits/stdc++.h>
using namespace std;
vector<int> coin_flips(std::vector<int> b, int c) {
    for(int i = 0 ; i < b.size() ; i++) if(b[i]) c^=i;
    return {c};
}

int find_coin(std::vector<int> b) {
    int ans=0;
    for(int i = 0 ; i < b.size() ; i++) if(b[i]) ans^=i;
    return ans;

}

Compilation message (stderr)

coins.cpp: In function 'std::vector<int> coin_flips(std::vector<int>, int)':
coins.cpp:6:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    6 |     for(int i = 0 ; i < b.size() ; i++) if(b[i]) c^=i;
      |                     ~~^~~~~~~~~~
coins.cpp: In function 'int find_coin(std::vector<int>)':
coins.cpp:12:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   12 |     for(int i = 0 ; i < b.size() ; i++) if(b[i]) ans^=i;
      |                     ~~^~~~~~~~~~

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