220209

#include <stdio.h>

int memo[99] = {};

int abc(int a, int b)

{

int c;

c=a-b;

if(a==0||b==0)

{

return memo[a] = ;

}

}

int cba(int a, int b, int c, int d)

{

c=a

}

int main()

{

int a,b,c,d;

scanf("%d %d", &a, &b);

printf("%d", abc(a,b));

return 0;

}