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gettting runtime error in uva-490
help me out

#include<iostream>
using namespace std;
int main()
{

string lines[100];
int i=0,max_len=0;
int x;
while(getline(cin,lines ))
{
if (lines =="")
continue;
x=lines .length();
if (x>max_len)
max_len=x;
i++;

}
//cout<<max_len;
int m;
for(m=0;m ...

i am getting TLE in uva-495..any help?

#include<iostream>
#include<string>
using namespace std;
string rev(string tmp)
{
char x;
for(int i=0,j=tmp.length()-1;i<j;i++,j--)
{
x=tmp ;
tmp =tmp[j];
tmp[j]=x;
}

return tmp;
}
string add(string small,string large)
{
int smlen=small.length()-1 ...