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답안 #2782

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
2782 2013-07-31T09:59:45 Z mhkim4886 다각형 (GA5_polygon) C++
100 / 100
 0 ms 1088 KB 
#include <stdio.h>

int main()
{
    long long a, b;
    scanf("%ld %ld", &a, &b);

    if(a < 3 && b < 3)
    {
        printf("0");
        return 0;
    }
    if(a < 3) a = 3;
    if(b < 3) b = 3;
    if(a % 2 == 1) a++;
    if(b % 2 == 1) b--;

    long long answer;
    if(((b - a) / 2 + 1) % 2 == 0) answer = (a + b) * ((b-a)/2+1) / 2;
    else answer = a + (a+2 + b) * (b-a) / 4;

    printf("%ld", answer);
}

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