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답안 #7817

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
7817 2014-08-19T10:34:22 Z IohcEjnim 다각형 (GA5_polygon) C++
100 / 100
 0 ms 1088 KB 
#include <stdio.h>

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

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

Subtask #1
60.0 / 60.0

# 결과 실행 시간 메모리 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
10.0 / 10.0

# 결과 실행 시간 메모리 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 #3
30.0 / 30.0

# 결과 실행 시간 메모리 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