题解（A2.数方格）

#include<stdio.h>
int main(){

int min;
int n;
int m;
    
scanf("%d",&n);
scanf("%d",&m);

min = n;
int cout = 0;
        
if(m < n)
    min = m;
    
int i;        
for(i = 0;i < min;i++){
    cout += (m-i)*(n-i);
}
        
printf("%d",cout);

}