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답안 #7809

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
7809 2014-08-19T10:26:59 Z Fakeable 다각형 (GA5_polygon) C++
100 / 100
 0 ms 1088 KB 
#include<cstdio>
int main()
{
	long long int n,n_,m,sum=0;
	scanf("%lld %lld",&n,&m);
	if(n==1 && m==1) { printf("0"); return 0; }
	n_=n;
	m/=2;
	if(n%2==0) n=n/2-1;
	else n=n/2;
	sum=m*(m+1)-n*(n+1);
	if(n_<3) sum-=2;
	printf("%lld",sum);
	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