02. Chess

#include <iostream>
#include <string>
#include <vector>

using namespace std;

int main() {
    string line, white, black;

    vector<vector<char>> chessBoard = vector<vector<char>>(8, vector<char>(8, '.'));

    for (int r = 0; r < 8; r++) {
        getline(cin, line);
        for (int c = 0; c < 8; c++) {
            if (line[c] != '.') {
                char chr = line[c];
                if (isupper(chr)) {
                    white += chr;
                }
                else {
                    black += chr;
                }
                chessBoard[r][c] = isupper(chr) ? tolower(chr) : toupper(chr);
            }
        }
    }

    cout << (white.empty() ? "<no white figures>" : white) << endl;
    cout << (black.empty() ? "<no black figures>" : black) << endl;

    for (int r = 0; r < 8; r++) {
        for (int c = 0; c < 8; c++) {
            cout << chessBoard[r][c];
        }
        cout << endl;
    }
    return 0;
}