Sicily 1395. Rounders

坑爹的0害我WA好几次

#include <iostream>#include <cmath>using namespace std;int arr[100];int num_dig(long long n){int k=0;while(n!=0){arr[k++]=n%10;n /= 10;}for(int i=0; i < k-1; i++){if(arr[i]>=5) arr[i+1]++;arr[i]=0;}return k;}int main(){int n;cin >> n;while(n--){long long num; cin >> num;if(num==0) cout << num;else {int count=num_dig(num);//cout << count << endl;for(int i=count-1; i >= 0; i--)cout << arr[i];}cout << endl;}return 0;}