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Submission #7804

# Submission time Handle Problem Language Result Execution time Memory
7804 2014-08-19T10:25:19 Z jackae98 다각형 (GA5_polygon) C++
60 / 100
 0 ms 1088 KB 
#include <stdio.h>
long long int a,b;
long long int f(int c){
	long long int k = (c*(c+1)/2)*2;
	if(k>=2) k-=2;
	return k;
}
int main(){
	scanf("%lld %lld",&a,&b);
	long long int ans = (f(b/2)-f((a-1)/2));
	printf("%lld",ans);
}

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
0.0 / 10.0

# 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 #3
0.0 / 30.0

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