80pts求助！只WA了#1

思路：枚举全排列&判断是否满足条件

#include<bits/stdc++.h>
typedef long double ld;
using namespace std;
int a,b,c,x[]{1,0,2,3,4,5,6,7,8,9},out;
bool can(int x1,int x2,int x3){
    return abs((ld)x1/x2-(ld)a/b)<0.00001&&abs((ld)x2/x3-(ld)b/c)<=0.00001;
}
int main(){
    cin>>a>>b>>c;
    do{
        int x1=x[0]*100+x[1]*10+x[2],x2=x[3]*100+x[4]*10+x[5],x3=x[6]*100+x[7]*10+x[8];
        if(can(x1,x2,x3)){
            out++;
            cout<<x1<<' '<<x2<<' '<<x3<<'\n';
        }
    }while(next_permutation(x,x+10));
    if(!out)cout<<"No!!!";
}