50059. Binary Representation

#include <stdio.h>
#include <stdlib.h>
#include <limits.h>
#include <string.h>
#include <stdint.h>

char s[33];
int n;
int now[5] = {0};
int now_idx = 0;

void print_char(char s[33], int now[5]){
    int cnt = 0;
    int p = 1;
    for(int i = 4; i >= 0; i--){
        if(now[i] != 0) cnt += p;
        p *= 2;
    }
    printf("%c", s[cnt]);
}

int main(){
    scanf("%s", s);
    scanf("%d", &n);
    for(int i = 0; i < n; i++){
        uint32_t num; scanf("%d", &num);
        for(int i = 31; i >= 0; i--){
            now[now_idx] = (num >> i) & 1;
            now_idx += 1;
            if(now_idx == 5){
                print_char(s, now);
                now_idx = 0;
            }
        }
    }
    printf("\n");
}