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답안 #7879

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
7879 2014-08-22T10:48:33 Z comet 다각형 (GA5_polygon) C++
100 / 100
 0 ms 1088 KB 
#include<cstdio>
long long a,b;
long long f(long long s,long long t){
    long long n=(t-s)/2+1;
    return n*(s+t)/2;
}
int main(){
    scanf("%lld%lld",&a,&b);
    if(a%2)a++;
    if(b%2)b--;
    if(b<4)puts("0");
    else{
        if(a<4)a=4;
        printf("%lld",f(a,b));
    }
}

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