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답안 #4128

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
4128 2013-09-01T17:39:02 Z pichulia 다각형 (GA5_polygon) C++
100 / 100
 0 ms 1088 KB 
#include<stdio.h>
long long int a,b,c,d;
long long int f(long long int x)
{
	x/=2;
	x=x*(x+1);
	return x>0?x-2:0;
}
int main()
{
	scanf("%lld %lld",&a,&b);
	printf("%lld\n",f(b)-f(a-1));
}

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