oj.uz

Submission #7815

# Submission time Handle Problem Language Result Execution time Memory
7815 2014-08-19T10:33:49 Z IohcEjnim 다각형 (GA5_polygon) C++
60 / 100
 0 ms 1088 KB 
#include <stdio.h>

long long f(int x)
{
  if (x < 2) return 0;
  return x*(x+1)-2;
}

int main()
{
  int a, b;
  scanf("%d %d", &a, &b);
  printf("%lld", f(b/2)-f((a-1)/2));
  return 0;
}

Subtask #1
60.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 1088 KB Output is correct
2 Correct 0 ms 1088 KB Output is correct
3 Correct 0 ms 1088 KB Output is correct
4 Correct 0 ms 1088 KB Output is correct
5 Correct 0 ms 1088 KB Output is correct

Subtask #2
0.0 / 10.0

# 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 #3
0.0 / 30.0

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