Submission #1167243


Source Code Expand

#include <iostream>
using namespace std;
typedef long long ll;
int main( void )
{
  ios::sync_with_stdio(false);
  ll X;
  cin >> X;
  ll lo = 0;
  ll hi = 100000;
  ll ret = hi;
  while( lo <= hi ){
    ll mid = (lo+hi)/2;
    ll v = (mid+1)*mid/2;
    if( v >= X ){
      ret = min( ret, mid );
      hi = mid-1;
    } else {
      lo = mid+1;
    }
  }
  cout << ret << endl;
}

Submission Info

Submission Time
Task C - Go Home
User capythm
Language C++14 (GCC 5.4.1)
Score 200
Code Size 402 Byte
Status AC
Exec Time 1 ms
Memory 256 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 200 / 200
Status
AC × 3
AC × 18
Set Name Test Cases
Sample 0_000.txt, 0_001.txt, 0_002.txt
All 0_000.txt, 0_001.txt, 0_002.txt, 1_003.txt, 1_004.txt, 1_005.txt, 1_006.txt, 1_007.txt, 1_008.txt, 1_009.txt, 1_010.txt, 1_011.txt, 1_012.txt, 1_013.txt, 1_014.txt, 1_015.txt, 1_016.txt, 1_017.txt
Case Name Status Exec Time Memory
0_000.txt AC 1 ms 256 KB
0_001.txt AC 1 ms 256 KB
0_002.txt AC 1 ms 256 KB
1_003.txt AC 1 ms 256 KB
1_004.txt AC 1 ms 256 KB
1_005.txt AC 1 ms 256 KB
1_006.txt AC 1 ms 256 KB
1_007.txt AC 1 ms 256 KB
1_008.txt AC 1 ms 256 KB
1_009.txt AC 1 ms 256 KB
1_010.txt AC 1 ms 256 KB
1_011.txt AC 1 ms 256 KB
1_012.txt AC 1 ms 256 KB
1_013.txt AC 1 ms 256 KB
1_014.txt AC 1 ms 256 KB
1_015.txt AC 1 ms 256 KB
1_016.txt AC 1 ms 256 KB
1_017.txt AC 1 ms 256 KB