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#0: 50% WA (line:1)

您的答案為: 1 152131 ...略
正確答案為: 1 1

#1: 50% WA (line:1)

 

您的答案為: 6 -16355 ...略
正確答案為: 6 3

#include<iostream>

#include<math.h>

using namespace std;

string dec_to_bin(int a){

string s="";

while(a>0){

if(a%2==1){

s = '1' + s;

a/=2;

}

else{

s = '0' + s;

a/=2;

}

}

return s;

}

int hex_to_dec(int a){

int i=0,dec=0;

while(a>0){

dec += (a%10) * pow(16,i);

a/=10;

i+=1;

}

return dec;

}

int cnt_bits(string a){

int cnt;

for(int i=0;i<a.length();++i){

if(a[i]=='1'){

cnt+=1;

}

}

return cnt;

}

int main(){

int T;

cin >> T;

while(T--){

int n,dec_cnt,hex_cnt;

string s;

cin >> n;

s = dec_to_bin(n);

dec_cnt = cnt_bits(s);

n = hex_to_dec(n);

s = dec_to_bin(n);

hex_cnt = cnt_bits(s);

cout << dec_cnt << " " << hex_cnt << endl;

}

}

 

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int cnt;

cnt沒有設定初始值

 

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int cnt;

cnt沒有設定初始值

謝謝XD 我太粗心了