Submission #955413

#	Time	Username	Problem	Language	Result	Execution time	Memory
955413		guymmk	Coins (IOI17_coins)	C++14	100 / 100	8 ms	1940 KiB

coins

#include "bits/stdc++.h"
using  namespace std;
vector<int> coin_flips(vector<int> b, int c){
    int o=c;
    for(int i=0;i<b.size();i++){
        o^=(b[i]*i);
    }vector<int>v;
    v.push_back(o);
    return v;
}int find_coin(vector<int> b){
   int o=0;
    for(int i=0;i<b.size();i++){
        if(b[i])o^=i;
    }return o;
}

Compilation message (stderr)

coins.cpp: In function 'std::vector<int> coin_flips(std::vector<int>, int)':
coins.cpp:5:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    5 |     for(int i=0;i<b.size();i++){
      |                 ~^~~~~~~~~
coins.cpp: In function 'int find_coin(std::vector<int>)':
coins.cpp:12:18: 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++){
      |                 ~^~~~~~~~~

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