Sukat

input/code.cpp: In function 'int main()':
input/code.cpp:15:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |     for(int i = 0; i < s.size(); i++) {
      |                    ~~^~~~~~~~~~
input/code.cpp:28:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |         for(int i = 0; i < v.size(); i++) {
      |                        ~~^~~~~~~~~~
input/code.cpp:54:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   54 |     for (int i = 0; i < ans.size(); i = i+2) {
      |                     ~~^~~~~~~~~~~~

#include <bits/stdc++.h>

using namespace std;

int main() {
    vector<int> v = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
    string s;
    string ans;
    int a,b,apos,bpos;
    int ansi;
    ansi = 0;
    ans = "";
    char c;
    cin >> s;
    for(int i = 0; i < s.size(); i++) {
        c = s[i];
        for(int j = 65; j <= 90; j++) {
            if (c == j) {
            v[j-65]=v[j-65]+1;
            }
        }
    }
    while(true) {
        a = -1;
        b = -1;
        apos = -1;
        bpos = -1;
        for(int i = 0; i < v.size(); i++) {
            if (v[i] > a) {
               if (a > b) {
                   b = a;
                   bpos = apos;
               }
               a = v[i];
               apos = i;
            }
           else if (v[i] > b) {
               b = v[i];
               bpos = i;
           }
        }
        if (a > 0 and b > 0) {
            ans = ans+char(apos+65);
            ans = ans+char(bpos+65);
            v[apos] = v[apos]-1;
            v[bpos] = v[bpos]-1;
            ansi = ansi+1;
        }
        else {
            break;
        }
    }
    cout << ansi << "\n";
    for (int i = 0; i < ans.size(); i = i+2) {
        cout << ans[i] << ans[i+1] << "\n";
    }
}

Test 1

Group: 1, 2, 3

Verdict: ACCEPTED

Test 2

Group: 1, 2, 3

Verdict: ACCEPTED

Test 3

Group: 1, 2, 3

Verdict: ACCEPTED

Test 4

Group: 1, 2, 3

Verdict: ACCEPTED

Test 5

Group: 1, 2, 3

Verdict: ACCEPTED

Test 6

Group: 1, 2, 3

Verdict: ACCEPTED

Test 7

Group: 1, 2, 3

Verdict: ACCEPTED

Test 8

Group: 2, 3

Verdict: ACCEPTED

Test 9

Group: 2, 3

Verdict: ACCEPTED

Test 10

Group: 2, 3

Verdict: ACCEPTED

Test 11

Group: 2, 3

Verdict: ACCEPTED

Test 12

Group: 2, 3

Verdict: ACCEPTED

Test 13

Group: 2, 3

Verdict: ACCEPTED

Test 14

Group: 2, 3

Verdict: ACCEPTED

Test 15

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 16

Group: 3

Verdict: ACCEPTED

Test 17

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 18

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 19

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 20

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 21

Group: 3

Verdict: ACCEPTED