Problem with “GNY07D - Decoding”

Hello, I am trying to solve this problem on SPOJ. However, the judge is returning “runtime error (SIGABRT)”.

Can someone please tell me what’s wrong with my code? Thanks.

This is the problem: http://www.spoj.com/problems/GNY07D/

Here is my code:

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#include <iostream>
#include <vector>
#include <string>
#include <cmath>

using namespace std;

class dataset
{
public:
	string line;
	int r, c;
	vector<vector<int>> data;
};

//Converts binary to decimal
char convBin(string binary)
{
	int j = 4;
	int output = 0;
	for (int i = 0; i < 5; i++)
	{
		if (binary.at(j) - '0' == 1)
		{
			output += pow(2, i);
		}
		j--;
	}
	
	output += 64;
	if (output == 64)
	{
		return ' ';
	}
	else
	{
		return output;
	}
}

string convMat(dataset &set)
{
	string output = "";

	int val = 0;
	while (!set.data.empty())
	{
		if (val == 0 && set.r != 0)
		{
			for (int i = 0; i < set.c; i++)
			{
				output += to_string(set.data.at(0).at(i));
			}
			set.data.erase(set.data.begin());
			set.r--;
			val++;
		}
		if (val == 1 && set.r != 0)
		{
			for (int i = 0; i < set.r; i++)
			{
				output += to_string(set.data.at(i).at(set.c - 1));
				set.data.at(i).erase(set.data.at(i).begin() + (set.c - 1));
			}
			set.c--;
			val++;
		}
		if (val == 2 && set.r != 0)
		{
			for (int i = (set.c - 1); i >= 0; i--)
			{
				output += to_string(set.data.at(set.r - 1).at(i));
			}
			set.data.erase(set.data.begin() + (set.r - 1));
			set.r--;
			val++;
		}
		if (val == 3 && set.r != 0)
		{
			for (int i = (set.r - 1); i >= 0; i--)
			{
				output += to_string(set.data.at(i).at(0));
				set.data.at(i).erase(set.data.at(i).begin());
			}
			set.c--;
			val = 0;
		}

		if (set.c == 0)
		{
			while (set.r > 0)
			{
				if (set.data.at(0).empty())
				{
					set.data.erase(set.data.begin());
					set.r--;
				}
			}
		}
	}

	return output;
}

//Inputs string into matrix format
void inputMat(dataset &set)
{
	cin >> set.r >> set.c >> set.line;

	set.data.resize(set.r);
	for (int i = 0; i < set.r; i++)
	{
		for (int j = 0; j < set.c; j++)
		{
			set.data.at(i).push_back(set.line.at(0) - '0');
			set.line.erase(set.line.begin());
		}
	}
}

//Main function
int main()
{
	int numSet;
	cin >> numSet;

	vector<dataset> set;
	set.resize(numSet);
	
	vector<string> out;
	for (int i = 0; i < numSet; i++)
	{
		inputMat(set.at(i));
		string line = convMat(set.at(i));
		int num = (line.length() - (line.length() % 5)) / 5;
		
		string text = "";
		for (int j = 0; j < num; j++)
		{
			text += convBin(line.substr(0, 5));
			line.erase(0, 5);
		}

		out.push_back(text);
	}

	for (int i = 0; i < numSet; i++)
	{
		cout << (i + 1) << " " << out.at(i) << endl;
	}

	return 0;
}
Last edited on
Nevermind, I managed to solve the problem.
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