#include <stdio.h>
int main() {
int a,b,c,d,e,f,g,h;
scanf("%d%d%d",&a
,&b
,&c
); switch(c)
{
case 1:
d=a+b;
break;
case 2:
e=a-b;
break;
case 3:
f=a*b;
break;
case 4:
g=a/b;
h=a%b;
return 0;
}
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