제출 #2803

#제출 시각아이디문제언어결과실행 시간메모리
2803ksmin1114다각형 (GA5_polygon)C++98
0 / 100
0 ms1088 KiB
#include<stdio.h>
int main(){
    long long int n,m,i,t=0;
    scanf("%lld %lld",&n,&m);
    if(n%2==1)n++;
	if(n==1||n==2)n=4;
	if(m%2==1)m--;
	if(n==m)printf("%d",n);
    else printf("%lld",(m-n+2)*(n+m)/4);
}
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