#include <stdio.h>
#include <string.h>
#include <ctype.h>

char convert_to_normal(char ch) {
    switch (ch) {
        case '0': return 'o';
        case '1': return 'i';
        case '2': return 'z';
        case '3': return 'e';
        case '4': return 'a';
        case '5': return 's';
        case '6': return 'b';
        case '7': return 't';
        case '8': return 'b';
        case '9': return 'q';
        default: return tolower(ch);
    }
}

int contains_substring(char *food_name, char *ingredient) {
    int len_food = strlen(food_name);
    int len_ing = strlen(ingredient);
    int i, j;
    
    for (i = 0; i <= len_food - len_ing; i++) {
        int found = 1;
        for (j = 0; j < len_ing; j++) {
            if (convert_to_normal(food_name[i + j]) != convert_to_normal(ingredient[j])) {
                found = 0;
                break;
            }
        }
        if (found) return 1;
    }
    return 0;
}