Text Alignment

input/code.cpp: In function 'void solve()':
input/code.cpp:66:23: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::__cxx11::basic_string<char> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   66 |     for (int i = 0; i < words.size(); i += 2)
      |                     ~~^~~~~~~~~~~~~~

#include <iostream>
#include <vector>
#include <array>
#include <string>
#include <algorithm>
#include <numeric>
#include <unordered_map>
#include <unordered_set>
#include <set>
#include <queue>
#include <climits>
#include <cmath>
#include <functional>
#include <type_traits>
#include <fstream>
#include <bitset>
#include <complex>
#include <iomanip>
#include <bits/stdc++.h>
 
#include <ext/pb_ds/assoc_container.hpp> // gcc only
template<typename T>
using ordered_set = __gnu_pbds::tree<T, __gnu_pbds::null_type, std::less<T>, __gnu_pbds::rb_tree_tag, __gnu_pbds::tree_order_statistics_node_update>;
 
#define int long long
using namespace std;
 
int p(int base, int power, int mod)
{
    if (power == 0)
        return 1;
    if (power % 2 == 0)
    {
        int r = p(base, power/2, mod);
        return (r*r) % mod;
    }
    else
        return (p(base, power-1, mod)*base) % mod;
}
 
int LCM(int a, int b)
{
    return (a / __gcd(a, b)) * b;
}
 
int mod = 1e9+7;
 
 
void solve()
{
    string str;
    getline(cin, str);
    str += ' ';

    vector<string> words;
    
    auto p = str.find(' ');
    while (p != string::npos)
    {
        words.push_back(str.substr(0, p));
        str.erase(0, p+1);
        p = str.find(' ');
    }


    for (int i = 0; i < words.size(); i += 2)
    {
        int spaces = 50 - words[i].size() - words[i+1].size();
        string s = string(spaces, ' ');
        cout << words[i] << s << words[i+1] << '\n';
    }
} 
 
signed main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
 
    int t = 1;
 
    //cin >> t;
 
    for (int i = 0; i < t; i++)
    {
        solve();
        //cout.flush();
    }
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED

Test 11

Verdict: ACCEPTED

Test 12

Verdict: ACCEPTED

Test 13

Verdict: ACCEPTED