Submission #524615

#	Time	Username	Problem	Language	Result	Execution time	Memory
524615		lukameladze	Odd-even (IZhO11_oddeven)	C++14	0 / 100	1 ms	332 KiB

oddeven

# include <bits/stdc++.h>
#define f first
#define s second
#define pb push_back
#define int long long
using namespace std;
const int N = 3e5 + 5;
int raod,cur,n,le,ri,ans,lef,rem;
main() {
    cin>>n;
    le = 0;
    ri = 1e10;
    while (le <= ri) {
        int mid = (le + ri) / 2;
        if ((mid*(mid + 1))/2 < n) {
            ans = mid;
            le = mid + 1; 
        } else ri = mid - 1;
    }
    lef = ans*ans+1;
    rem = n - (ans*(ans + 1))/2;
    cout<<lef + (rem - 1)*2<<endl;
}

Compilation message (stderr)

oddeven.cpp:9:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    9 | main() {
      | ^~~~

• Subtask 1: 0 / 100