#include<stdio.h>
#include<math.h>
int add(int x,int y){
int s;
s=x+y;
return s;
}
int minus(int x,int y){
int s;
s=x-y;
return s;
}
int multip(int x,int y){
int s;
s=x*y;
return s;
}
int quotient(int x,int y){
int s;
s=x/y;
return s;
}
int mod(int x,int y){
int s;
s=x%y;
}
int main()
{
int x,y;
char c;
int a,b;
int r;
scanf("%d",&x);
scanf("%c",&c);
scanf("%d",&y);
if (c=='+')
r=add(x,y);
else if (c=='-')
r=minus(x,y);
else if (c=='*')
r=multip(x,y);
else if (c=='/')
r=quotient(x,y);
else if (c=='%')
r=mod(x,y);
printf("The result is %d\n",r);
return 0;
}
#include<stdio.h>
int prime(int n){
int i,j,k;
k=n/2;
if (n==1)
return 0;
for (i=2;i<=k;i++)
{
if (n%i==0)
return 0;
}
return 1;
}
int main()
{
int n;
while (scanf("%d",&n)==1)
{if (prime(n)==1)
printf("YES\n");
else if (prime(n)==0)
printf("NO\n");}
return 0;
}
#include<stdio.h>
int max2(int a,int b){
if (a>=b)
return a;
else (a<b);
return b;
}
int max4(int a,int b,int c,int d){
int m,n;
m=max2(a,b);
n=max2(c,d);
return max2(m,n);
}
int main(){
int a,b,c,d,s;
scanf("%d",&a);
scanf("%d",&b);
scanf("%d",&c);
scanf("%d",&d);
s=max4(a,b,c,d);
printf("%d\n",s);
return 0;
}
#include<stdio.h>
int qwe(int n){
int l;
if (n==1||n==0)
l=1;
else
l=n*qwe(n-1);
return l;
}
int main(){
int n;
scanf("%d\n",&n);
printf("%d\n",qwe(n));
return 0;
}
