#include<stdio.h>
int main(){
    int rct1,rct2,mass;
    
    if(scanf("%d\n", &rct1) !=1) {
        printf("Invalid input\n");
        return 0;
    }
    if(scanf("%d\n", &rct2) !=1) {
        printf("Invalid input\n");
        return 0;
    }
    if(rct1<0 || rct<0) {
        printf("Include input");
    }
    else{
        mass=rct1+rct2;
        printf("%d\n",mass);
    }
}