#include <stdio.h>
#include <string.h>
#define INPUT(str) do{char *p;fgets(str,sizeof(str),stdin);p=strchr(str,'\n');if(p)*p='\0';}while(0)
int main(){
    char str[45];
    int a,b;
    INPUT(str);
    sscanf(str,"%d %d",&a,&b);
    if( b >= 0 ) {
        char *cp;
        long long cc;
        cp = strchr(str,' ');
        sprintf( cp,"%d",b);
        sscanf(str,"%lld", &cc);
        printf("%lld\n",cc);
    } else {
        printf("%d\n",a+b);
    }
}