#include <stdio.h>


char str[110];



int main(){
    /*
    gets(str);

    char res[110];

    int j = 0;
    for(int i = 0; str[i] != '\0'; i++){
        if (str[i] != '3' && str[i] != '9'){
            res[j] = str[i];
            j++;
        }
    }
    res[j] = '\0';
    printf("%s", res);
    */
    char c = '8';
    int x = c - '0'; // ASCII - êîä 56

    printf("%d",  x + 2) ;


/*
    for(int i = 0; str[i] != '\0'; i++){
        if (str[i] != '3' && str[i] != '9'){
            printf("%c", str[i]);
        }
    }
*/
/*
    int i = 0;
    while (str[i] != '\0'){
        i++;
    }

    // 'a' 'b' 'c' ... 'z'
    int oper = 0;
    for(int i = 0; str[i] != '\0'; i++){
        if (str[i] == '+' || str[i] == '-' || str[i] == '*'){
            oper++;
        }

    }
    if (str[0] == '-'){
        oper--;
    }

    printf("%s\n", str);
    printf("%d\n", i);
    printf("bukv u menya = %d", bukva);

*/

    return 0;
}