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Submission #2839

# Submission time Handle Problem Language Result Execution time Memory
2839 2013-07-31T15:06:15 Z ansol4328 다각형 (GA5_polygon) C++
0 / 100
 0 ms 1088 KB 
#include<stdio.h>

int main()
{
    long long a, b, sum;

    scanf("%lld %lld",&a,&b);
    sum=((b*(b+1)/2-(b+1)/2)/2)+(b+1)/2-2;
    if((b+1)%2==0) sum-=(b+1)/2;
    printf("%lld",sum);
    return 0;
}

Subtask #1
0.0 / 60.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 1088 KB Output isn't correct
2 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 -