题解

#include <iostream>
#include <cctype> 
using namespace std;

int main() {
    string input;
    cin >> input;

    char current_char = input[0];
    int count = 1;

    for (size_t i = 1; i < input.length(); ++i) {
        if (toupper(input[i]) == toupper(current_char)) {
            count++;
        } else {
            cout << "(" << char(toupper(current_char)) << "," << count << ")";
            current_char = input[i];
            count = 1;
        }
    }
    cout << "(" << char(toupper(current_char)) << "," << count << ")";

    return 0;
}