第二个题解

其实不简单

#include <bits/stdc++.h>
using namespace std;
void f(int x){
    int r = x / 16;
    int l = x % 16;
	if(r >= 10){
        cout<<(char)(r + 'A' - 10);
    }
    else{
        cout<<(char)(r + '0');
    }
    if(l >= 10){
        cout<<(char)(l + 'A' - 10);
    }
    else{
        cout<<(char)(l + '0');
    }
}
int a[105];
int main(){
    long long n;
    cin>>n;
    if(n == 0){
    	cout<<"00";
    	return 0;
	}
    int i = 0;
    while(n > 0){
        a[i] = n % 128;
        n /= 128;
        if(n > 0){
            a[i] += 128;
        }
		i++;
    }
    for(int j = 0;j < i;j++){
		f(a[j]);
        cout<<" ";
    }
    return 0;
}