oj.uz

Submission #7780

# Submission time Handle Problem Language Result Execution time Memory
7780 2014-08-19T10:05:48 Z gs13023 다각형 (GA5_polygon) C++
0 / 100
 0 ms 1088 KB 
#include<cstdio>
long long f(int n)
{
  int t=n/2;
  return t*(t+1);
}
int main()
{
  int a,b;
  scanf("%d%d",&a,&b);
  printf("%lld",f(b)-f(a-1));
}

Subtask #1
0.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 1088 KB Output is correct
2 Incorrect 0 ms 1088 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0.0 / 10.0

# Verdict Execution time Memory Grader output
1 Halted 0 ms 0 KB -

Subtask #3
0.0 / 30.0

# Verdict Execution time Memory Grader output
1 Halted 0 ms 0 KB -