Battle Simulation

#include<bits/stdc++.h>
using namespace std;

string s;
map<char, char> m;

int main() {
    cin >> s;
    m['R'] = 'S';
    m['B'] = 'K';
    m['L'] = 'H';

    int l = (int) s.length();
    int i = 0;
    while (i < l-2){
        if (s[i] != s[i+1] && s[i] != s[i+2] && s[i+1] != s[i+2]){
            cout << 'C';
            i += 3;
        } else {
            cout << m[s[i]];
            i ++;
        }
    }
    for (int j = i; j < l; j++)
        cout << m[s[j]];
    cout << endl;
    
    return 0;
}

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

Test 14

Verdict: ACCEPTED

Test 15

Verdict: ACCEPTED

Test 16

Verdict: ACCEPTED