Go: package main

import (
        "fmt"
        "bufio"
        "os"
)

func main() {
        var a, b, c, d, e, f float64
        sc := bufio.NewScanner(os.Stdin)
        for sc.Scan() {
                fmt.Sscanf(sc.Text(), "%f %f %f %f %f %f", &a, &b, &c, &d, &e, &f)

                det := a*e - b*d
                x := (e*c - b*f) / det
                y := (a*f - c*d) / det
                fmt.Printf("%04f %04f\n", x, y)
        }
}

C++: //
//  main.cpp
//  CppTest
//
//  Created by Ryu on 2017/02/08.
//  Copyright ?? 2017??´ Ryu. All rights reserved.
//

#include <iostream>
#include <algorithm>
#include <cmath>
using namespace std;

int main(int argc, const char * argv[]) {
    // insert code here...
    cin.tie(0);
    ios::sync_with_stdio(false);
    
    float e[10000][6];
    int n = 0;
    float x[10000], y[10000];
    while (cin >> e[n][0] >> e[n][1] >> e[n][2] >> e[n][3] >> e[n][4] >> e[n][5]) {
        float d = e[n][0] * e[n][4] - e[n][1] * e[n][3];
        x[n] = (e[n][4] * e[n][2] - e[n][1] * e[n][5]) / d;
        y[n] = (0 - e[n][3] * e[n][2] + e[n][0] * e[n][5]) / d;
        //printf("d: %f, x: %.4f, y: %.4f\n", d, x[n], y[n]);
        n++;
    }
    
    
    for(int i = 0; i < n; i++){
        if(x[i] == -0){
            x[i] = 0;
        }
        if(y[i] == -0){
            y[i] = 0;
        }
        printf("%.4f %.4f\n", x[i], y[i]);
    }
    
    
    return 0;
}

C++: #include<cstdio>
#include<iostream>
#include<iomanip>

using namespace std;

int main(){
  double a,b,c,d,e,f,x,y;
  while( cin >>a>>b>>c>>d>>e>>f){
    x = (c*e - b*f)/(a*e - b*d);
    y = (a*f - c*d)/(a*e - b*d);
    cout <<fixed<<setorecision(3)<<x<<" "<<y<<endl;
  }
  return 0;
}

C++: #include <iostream>
#include <cstdio>
using namespace std;

void Solve(double a,double b,double c,double d,double e,double f){
    double x,y;

    y = (a*f-d*c)/(a*e-d*b);
    x = (c-b*y)/a;

    if(x==0)x=0.000;
    if(y==0)y=0.000;

    printf("%4.3f %4.3f\n",x,y);
}
int main(){
    double a,b,c,d,e,f;

    while(cin >> a >> b >> c >> d >> e >> f){

    Solve(a,b,c,d,e,f);

    }
    
    return 0;
}

C++: #include <iostream>
using namespace std;

int main(){
  float a,b,c,d,e,f;
  float x,y;
  while(cin >> >> a >> b >> c >> d >> e >> f){
    y = (c*d-a*f) / (b*d-a*e);
    x = (c - b*y) /a;
    printf("%.3f %.3f\n",x,y);
  }
  return 0;
}

C++: #include <iostream>
#include <algorithm>
using namespace std;

int main(){
	float a,b,c,d,e,f,i,n;
	while(cin >> a >> b >> c >> d >> e >> f){
		printf("%6.3f %6.3f\n",(c*e-b*f)/(a*e-b*d) ,(c*d-a*f)/(b*d-a*e));
	}
	return 0;
}

C++: 
#include <iostream>
#include <cstdio>
using namespace std;

int main()
{
    double a,b,c,d,e,f;
    double x,y;
    
    while(cin >> a >> b >> c >> d >> e >> f){
        if(b*d - a*e != 0){
         
         double tmp1 = (c*e - b*f),tmp2 = (a*e - b*d),tmp3 = (c*d - a*f),tmp4=(b*d - a*e);
        tmp1 = tmp1/tmp2;
        tmp2 = tmp3/tmp4;
        x = tmp1;
        y = tmp2;
	if(x < 0.0001 && x > -0.0001) x = 0;
	if(y < 0.0001 && y > -0.0001) y = 0;
         printf("%.3f %.3f",x,y);
        }
    }
    return 0;
}

C++: #include<iostream>
#include<stdio.h>
using namespace std;
int main(){
    double a,b,c,d,e,f;
    double x,y;
    while(cin >> a >> b >> c >> d >> e >> f){
        x = (double)((e*c-b*f) / (a*e-b*d));
        y = (double)((-(d*c)+a*f) / (a*e-b*d));
        if(x == 0){x = 0;}
        if(y == 0){y = 0;}
        printf("%.3f %.3f\n",x,y);
    }
}

C++: #include <iostream>
using namespace std;

int main(){
  float a,b,c,d,e,f;
  float x,y;
  while(cin >> a >> b >> c >> d >> e >> f){
    y = (c*d-a*f) / (b*d-a*e);
    x = (c - b*y) /a;
    printf("%.3f %.3f\n",x,y);
  }
  return 0;
}

C++: /*
C++ ???????????????????????????????????¬??????
??????AOJ-ITP1??????????????????
*/
#define _USE_MATH_DEFINES

#include <iostream> // ?¨??????\??????
#include <fstream>  // ??????????????\??????
#include <string>   // ???????????¢???
#include <vector>   // ???????????????
#include <cmath>    // ??°??????
#include <iomanip>  // stream???????????¢???
#include <algorithm>// max??¢??°??????

using std::cin;
using std::cout;
using std::endl;
using std::string;
using std::vector;        // ????´???°????????????????????????
using std::fixed;         // ???????????????????¨???????????????????????????????
using std::setprecision;  // ?????°????°???°?????\???????????°????????????????????¨????????\???

int main() {
	double a, b, p, c, d, q;
	double x, y;

	while (cin >> a >> b >> p >> c >> d >> q)
	{
		x = (p*d - b*q) / (a*d - b*c);
		y = (a*q - p*c) / (a*d - b*c);
		
		cout << fixed << setprecision(5) << x << " " << y << endl;
	}
	return 0;
}

C++: #include <iostream>
#include <cstdio>

using namespace std;

int main(int argc, const char * argv[])
{
    int a, b, c, d, e, f;
    while (cin >> a >> b >> c >> d >> e >> f) {
        double x, y;
        x = (c * e - b * f) / (a * e - b * d);
        y = (a * f - c * d) / (a * e - b * d);
        printf("%.3f %.3f\n", x, y);
    }

    return 0;
}

C++: #include <iostream>

using namespace std;

int main()
{
	double	x,a,b,c,d,e,f;
	cin >> a >> b >> c >> d >> e >> f;
	//a*x-b*d*x/e =c-b*f/e
	for(x=-1000000;x<1000000;x++)
	{
		if(a*(x/1000)+b*((f-d*(x/1000))/e) == c)
		{
			printf("%0.3lf ",x/1000);
			break;
		}
	}
	
	printf("%0.3lf",(f-d*x/1000)/e); //yÌoÍ
}

C++: #include <iostream>
#include <vector>
#include <cmath>
using namespace std;


int main(){
	vector<double> ans_x;
	vector<double> ans_y;
	double a, b, c, d, e, f;
	double tb, tc, te, tf;
	double x, y;
	int i, cnt=0;
	while(cin>>a>>b>>c>>d>>e>>f){
		tb=b*d;
		tc=c*d;
		te=e*a;
		tf=f*a;
		tb-=te;
		tc-=tf;
		y=tc/tb;
		x=(c-b*y)/a;
		x *= 1000;
		x += 0.5;
		x = floor(x);
		x /= 1000;
		y *= 1000;
		y += 0.5;
		y = floor(y);
		y /= 1000;
		ans_x.push_back(x);
		ans_y.push_back(y);
		cnt++;
	}
	for(i=0;i<cnt;i++){
		cout.precision(4);
		cout.setf(ios::showpoint);
		cout << ans_x[i] << ' ' << ans_y[i] << endl;
	}
	return 0;
}

C++: #include <iostream>
#include <iomanip>
#include <math.h>
using namespace std;

int main(){
    float a, b, c, d, e, f, x, y, dividedNum1, dividedNum2 = 0;
    while(cin >> a >> b >> c >> d >> e >> f){
        dividedNum1 = a;
        dividedNum2 = d;
        a /= dividedNum1;
        b /=dividedNum1;
        c /= dividedNum1;
        d /= dividedNum2;
        e /= dividedNum2;
        f /= dividedNum2;
        
        float temp1 = b - e;
        float temp2 = c - f;
        
        y = floor(((temp2 / temp1) + 0.0005) * 1000) / 1000;
        x = floor((c - (b * y) + 0.0005)* 1000) / 1000;
        
        cout << fixed << setprecision(3) << x << " " << fixed << setprecision(3) << y << endl;
    }
    return 0;
}

C++: #include <iostream>
#include <stdio.h>
using namespace std;

int main(){
	int a, b, c, d, e, f;
	double x, y;
	double p;

	cin >> a >> b >> c >> d >> e >> f;

	p = (double)e/(double)b;
	x = (p*(double)c-(double)f)/(p*(double)a-(double)d);
	y = ((double)c-(double)a*x)/(double)b;

	printf("%.3d %.3d", x, y);

	return 0;
}

C++: #include<iostream>
#include<cstdio>
using namespace std;
int main()
{
	int s = 100000;
	int n;
	cin >> n;
	while (n--) {
		if (int(s*1.05) % 1000 == 0) {
			s = int(s*1.05);
		}
		else {
			s = int(s*1.05) + (1000 - int(s*1.05) % 1000);
		}
	}
	printf("%d\n", s);
    return 0;
}

C++: #include<iostream>
#include<cstdio>
using namespace std;

int main(){
	int a,b,c,d,e,f;
	double x,y;
	
	while(cin >>a>>b>>c>>d>>e>>f){
		x=1.000*(c*e-b*f)/(a*e-b*d);
		y=1.000*(d*c-a*f)/(b*d-a*e);
		
		if(x==-0.000) x=0.000;
		printf("%.3f %.3f\n",x,y);
	}
	
	return 0;
}