Submission #543643

#	Time	Username	Problem	Language	Result	Execution time	Memory
543643		Sho10	Coins (IOI17_coins)	C++17	100 / 100	12 ms	1560 KiB

coins

#include <bits/stdc++.h> //Andrei Alexandru a.k.a Sho
using ll=long long;
using ld=long double;
int const INF=1000000005;
ll const LINF=1000000000000000005;
ll const mod=1000000007;
ld const PI=3.14159265359;
ll const MAX_N=3e5+5;
#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")
#define f first
#define s second
#define pb push_back
#define mp make_pair
#define endl '\n'
#define CODE_START  ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
using namespace std;
vector<int> coin_flips(vector<int>b,int c){
int xr=0;
for(ll i=0;i<b.size();i++)
{
    if(b[i]){
        xr^=i;
    }
}
vector<int>ans;
ans.pb(xr^c);
return ans;
}
int find_coin(vector<int>b){
int xr=0;
for(ll i=0;i<b.size();i++)
{
    if(b[i]){
    xr^=i;
}
}
return xr;
}
/*
int32_t main(){
CODE_START;
#ifdef LOCAL
    ifstream cin("input.txt");
#endif
*/

Compilation message (stderr)

coins.cpp: In function 'std::vector<int> coin_flips(std::vector<int>, int)':
coins.cpp:20:13: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 | for(ll i=0;i<b.size();i++)
      |            ~^~~~~~~~~
coins.cpp: In function 'int find_coin(std::vector<int>)':
coins.cpp:32:13: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   32 | for(ll 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