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