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Submission #2864

# Submission time Handle Problem Language Result Execution time Memory
2864 2013-08-01T03:39:08 Z ladown21 다각형 (GA5_polygon) C++
100 / 100
 0 ms 1088 KB 
#include <stdio.h>

int main()
{
	long long a, b;
	scanf("%lld%lld",&a,&b);
	a--;
	if (a<3) a=3;
	if (b<a) b=a;
	if (a&1) a--;
	if (b&1) b--;

	a/=2, b/=2;
	printf("%lld\n",((b*(b+1)/2)-(a*(a+1)/2))*2);
}

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
10.0 / 10.0

# 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 #3
30.0 / 30.0

# 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