#include<stdio.h>

int main(void){
    int day10,day1,rslt=0;
    for(day10=0;day10<4;day10++){
        for(day1=0;day1<10;day1++){
            if(day10==0&&day1==0){
                day1+=1;
            }
            if(day10==3&&day1==1){
                break;
            }
            rslt+=1;
        }
    }
    printf("%d\n",rslt);
    return 0;
}