LYDSY 2659
题目大意
暂无
题目解法
暂无
RTFC
//http://www.cnblogs.com/iwtwiioi/p/4985747.html
#include <cstdio>
int main()
{
int p, q;
scanf("%d%d", &p, &q);
printf("%lld", 1ll * (q - 1) * (p - 1) / 4 + (p == q) * (q - 1) / 2);
return 0;
}
暂无
暂无
//http://www.cnblogs.com/iwtwiioi/p/4985747.html
#include <cstdio>
int main()
{
int p, q;
scanf("%d%d", &p, &q);
printf("%lld", 1ll * (q - 1) * (p - 1) / 4 + (p == q) * (q - 1) / 2);
return 0;
}