#include <iostream.h> #include <stdio.h> #include <fstream.h> ifstream f("equa.in"); #define cin f int main() {     int c;     int i;     float x;     int max;     while(cin>>c)     {         max=(5000>(int)(100000/c)) ? (int)(100000/c) : 5000;         for(i=0;i<=max;i++)         {             float j=(float)i/1000;             if(j*j*j+j*c==100 )             break;         }         x=(float)((float)i/1000);         printf("%0.3f\n",x);     } }      

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