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Submission #2878

# Submission time Handle Problem Language Result Execution time Memory
2878 2013-08-01T09:13:24 Z cki86201 다각형 (GA5_polygon) C++
0 / 100
 0 ms 1088 KB 
#include<stdio.h>

long long int sum(int x)
{
	x/=2;
	long long int ret=x;
	return ret*(ret+1);
}

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

Subtask #1
0.0 / 60.0

# 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 #2
0.0 / 10.0

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

Subtask #3
0.0 / 30.0

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