HackerEarth Terrible Chandu problem solution

In this HackerEarth Terrible Chandu problem solution Chandu is a bad student. Once his teacher asked him to print the reverse of a given string. He took three hours to solve it. The teacher got agitated at Chandu and asked you the same question. Can you solve it?

HackerEarth Terrible Chandu problem solution.

#include <bits/stdc++.h>
using namespace std;
int main()
{
    string s, s1;
    int t;
    for(cin >> t;t--;)
    {
      cin >> s;
      
      // Reverse the string
      
      // Solution 1
      
      for(int i = 0;i < s.length() / 2;++i)
            swap(s[i], s[s.length() - i - 1]);
        cout << s << endl;
      
      // Solution 2
      /*
      s1 = ""
      for(int i = s.length() - 1;i >= 0;--i)
          s1 += s[i];
      cout << s1 << endl;
        
      // Solution 3
      
      reverse(s.begin(), s.end());
      cout << s << endl;
      */
    }
    return 0;
}

Second solution

tc = int(raw_input())
while tc>0:
  tc = tc - 1
  s = raw_input()
  print s[::-1]