牛客网——数字反转

#include<stdio.h>
int reverse(int num){
    int sum=0;
    while(num){
        sum= sum*10+num%10;
        num/=10;
    }
    return sum;
}
 
int main()
{
    int num1,num2;
        scanf("%d%d",&num1,&num2);
        if(reverse(num1+num2)==reverse(num1)+reverse(num2))printf("%d\n",num1+num2);
        else printf("NO\n");
    return 0;
}