aoj-0004-Simultaneous_Equation.cpp

gistfile1.cpp

#include <iostream>
#include <iomanip>
#include <vector>

using namespace std;

// "dbg" means "debug"

/*
void fdbg(int *dbg) {
	int i;
	for(i = 0; i < 6; i++) {
		cout << dbg[i] << " " << flush;
	}
	cout << endl;
}
*/

void ve_calc(double* ary, double* ans) {
	int i, j, tmp;

	for(i = 0; i < 4; i += 3) {
		if(ary[i] < 0) {
			for(j = 0; j < 3; j++) {
				ary[i + j] *= -1; // minus -> plus
			}
		}
	}
	//fdbg(ary);
	// dbg: ok

	if(ary[0] > ary[3]) {
		for(i = 0; i < 3; i++) {
			// replacing(?)
			tmp = ary[0 + i];
			ary[0 + i] = ary[3 + i];
			ary[3 + i] = tmp;
		}
	}
	//fdbg(ary);
	// dbg: ok
	
	while(ary[3] - ary[0] >= 0) {
		for(i = 0; i < 3; i++) {
			// calc
			ary[3 + i] -= ary[0 + i];
		}
	}
	//fdbg(ary);
	// dbg: ok

	for(i = 0; (i + 1) < 5; i += 3) {
		if(ary[i + 1] < 0) {
			for(j = 0; j < 2; j++) {
				// minus -> plus
				ary[(i + 1) + j] *= -1;
			}
		}
	}
	//fdbg(ary);
	// dbg: 

	for(i = 0; 2 - i > 0; i++) {
		// nemui
		// osasshi kudasai!
		ary[5 - i] /= ary[4];
	}
	//fdbg(ary);
	// dbg: ok

	while(ary[1] - ary[4] >= 0) {
		for(i = 0; i < 2; i++) {
			// nemui
			ary[1 + i] -= ary[4 + i];
		}
	}
	//fdbg(ary);
	// dbg: ok

	for(i = 0; i < 4; i += 3) {
		// "ah...nn...///"
		*ans = ary[2 + i];
		ans++;
	}
	// dbg: ok
}

int main() {
	int i, j;
	double tmp;
	double *ary = new double[6];
	vector<double> vect;

	i = j = 0;

/* input */
	for(i = 0; cin >> tmp; i++){
		vect.push_back(tmp);
	}
	// dbg: ok
	tmp = i / 6;
	// dbg: ok

	double *ans = new double[(int)tmp * 2];
	// ok
/* substitue vect for array */
	for(i = 0; i < tmp; i++) {
		for(j = 0; j < 6; j++) {
			ary[j] = vect.at(i * 6 + j);
		}
		// ok
/* call the "ve_calc()" */
		ve_calc(ary, ans + i * 2);

	}
	// dbg: ok

	for(i = 0; i < tmp * 2; i += 2) {
		cout << setprecision(4) << showpoint << ans[i] << " " << ans[i + 1] << endl;
	}

	///////////////////////////////////////////////////////
	// Oh... My coding skil is too low...?
	// I must learn more hard!
	// ...Are there sentences is sure??
	// <<MO DO NI DE MO NA RE!!>>
	///////////////////////////////////////////////////////
 
	delete[] ary;
	delete[] ans;

	return 0;
}

This is the WRONG answer of AOJ-0004.
Please give me any advices!!