被精度困扰一个多小时，好家伙

#include <bits/stdc++.h>
using namespace std;
const int N=12;
vector<double> money{100.0,50.0,20.0,10.0,5.0,2.0,1.0,0.5,0.25,0.10,0.05,0.01};
int flag[N];
int main()
{
    double n;
    cin>>n;
    for(int i=0;i<N;i++)
    {
            flag[i]=n/money[i];
            n=n-flag[i]*money[i]+0.000001;//精度丢失处理
    }
    printf("NOTAS:\n");
    for(int i=0;i<N/2;i++)
     {
        printf("%d nota(s) de R$ %.2f\n",flag[i],money[i]);
     }
    printf("MOEDAS:\n");
    for(int i=N/2;i<N;i++)
     {
        printf("%d moeda(s) de R$ %.2f\n",flag[i],money[i]);
     }
    return 0;

}