Sukat

input/code.cpp: In function 'void brute(std::array<int, 26>)':
input/code.cpp:10:13: warning: unused variable 'm' [-Wunused-variable]
   10 |         int m=0,d=0;
      |             ^

#include <bits/stdc++.h>
using namespace std;
#define F first
#define S second

int Max;
vector<pair<int,int>> v,M;

void brute(array<int,26> c){
	int m=0,d=0;
	for(int i=1;i<26;++i){
		for(int j=0;j<i;++j){
			if(!c[i]||!c[j]) continue;
			c[i]--;
			c[j]--;
			v.push_back({i,j});
			brute(c);
			v.pop_back();
			c[i]++;
			c[j]++;
			d=1;
		}
	}
	if(!d&&v.size()>M.size()){
		M.clear();
		for(auto p:v) M.push_back(p);
	}
}

int main(){
	string s;
	cin>>s;
	array<int,26> MM={0};
	for(int e:s) MM[e-'A']++;
	brute(MM);
	cout<<M.size()<<'\n';
	for(auto e:M){
		cout<<(char)(e.F+'A')<<(char)(e.S+'A')<<'\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: TIME LIMIT EXCEEDED

Test 9

Group: 2, 3

Verdict: ACCEPTED

Test 10

Group: 2, 3

Verdict: TIME LIMIT EXCEEDED

Test 11

Group: 2, 3

Verdict: TIME LIMIT EXCEEDED

Test 12

Group: 2, 3

Verdict: TIME LIMIT EXCEEDED

Test 13

Group: 2, 3

Verdict: TIME LIMIT EXCEEDED

Test 14

Group: 2, 3

Verdict: TIME LIMIT EXCEEDED

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: TIME LIMIT EXCEEDED