백준 3052 - C

#include <stdio.h>

#define STANDARD 42

int main(void) {
    int remain[STANDARD] = {0, };
    int num, temp, count = 0;
    
    for (int i = 0; i < STANDARD; i++) {
        remain[i] = -1;
    }
    
    for (int i = 0; i < 10; i++) {
        scanf("%d", &num);
        temp = num % STANDARD;
        for (int j = 0; j < STANDARD; j++) {
            if (remain[j] == -1) {
                remain[j] = temp;
                j = STANDARD;
            }
            else if (remain[j] == temp) {
                j = STANDARD;
            }
        }
    }
    
    for (int i = 0; i < STANDARD; i++) {
        if(remain[i] != -1) {
            count++;
        }
        else break;
    }
    
    printf("%d", count);
    
    return 0;
}