50135. String and Integer

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

uint64_t pow_func(uint64_t b, int r){
    uint64_t ans = 1;
    while(r--) ans *= b;
    return ans;
}

void solve_0(){
    int cnt = 0;
    uint64_t ans = 0;
    uint8_t c;
    while(scanf("%c", &c) != EOF && c != '\n'){
        ans = ans * (uint64_t)256 + (uint64_t)c;
        cnt++;
        if(cnt == 8){
            printf("%llu\n", ans);
            ans = 0;
            cnt = 0;
        }
    }
    while(cnt != 8){
        ans *= (uint64_t)256;
        cnt++;
    }
    printf("%llu\n", ans);
}

void solve_1(){
    int n; scanf("%d", &n);
    for(int i = 0; i < n; i++){
        uint64_t ans; scanf("%llu", &ans);
        for(int j = 7; j >= 0; j--){
            uint8_t c = (uint8_t)(ans >> (8 * j));
            if(c != 0) printf("%c", c);
        }
    }
}

int main(){
    int task; scanf("%d", &task); getchar();
    if(task == 0) solve_0();
    else solve_1();
}