Submission #884542

#	Time	Username	Problem	Language	Result	Execution time	Memory
884542		kokoue	Odd-even (IZhO11_oddeven)	C++14	0 / 100	2 ms	708 KiB

oddeven

#include<bits/stdc++.h>
using namespace std;
unsigned long long n;
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cin>>n;
    int cnt2=0;
    int sum=1;
    while(n>1)
    {
   //     cout<<"in with n="<<n<<", sum="<<sum<<", cnt2="<<cnt2<<"\n";
        if(n>cnt2+1) sum+=1+cnt2*2;
        else sum+=(n-1)*2;
        cnt2++;
        if(n<=cnt2) break;
        n-=cnt2;
    }
    cout<<sum<<"\n";
    return 0;
}

Compilation message (stderr)

oddeven.cpp: In function 'int main()':
oddeven.cpp:14:13: warning: comparison of integer expressions of different signedness: 'long long unsigned int' and 'int' [-Wsign-compare]
   14 |         if(n>cnt2+1) sum+=1+cnt2*2;
      |            ~^~~~~~~
oddeven.cpp:17:13: warning: comparison of integer expressions of different signedness: 'long long unsigned int' and 'int' [-Wsign-compare]
   17 |         if(n<=cnt2) break;
      |            ~^~~~~~

• Subtask 1: 0 / 100