#include <stdio.h>

int main(){

    FILE * fptr;
    FILE * fptr1;
    int teste;
    unsigned long long port1, port2;
    unsigned long long ban1, ban2;
    fptr = fopen("fructe.in","r");
    fptr1 = fopen("fructe.out","a");

    if( teste >= 1 && teste <= 100) {
        fscanf(fptr, "%d", &teste);
    }
    fscanf(fptr,"%lld %lld",&port1, &ban1);
    fscanf(fptr,"%lld %lld",&port2, &ban2);

    if ( port1 == 0 && ban1 == 0){
        fprintf(fptr1,"%d",1);
    } else if ( port2 == 1 && ban2 == 0 ){
        fprintf(fptr1,"%d",0);
    } else if ( port2 == 0 && ban2 == 1 ){
        fprintf(fptr1,"%d",1);
    }




    return 0;
}