Submission

Score: 100

User: loop

Problemset: Othello

Language: cpp

Time: 0.002 second

Submitted On: 2026-10-10 18:42:12

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

char b[8][9];

bool full() {
    for (int r = 0; r < 8; r++)
        for (int c = 0; c < 8; c++)
            if (b[r][c] == '_') return false;
    return true;
}

int main() {
    for (int r = 0; r < 8; r++) {
        string line;
        cin >> line;
        for (int c = 0; c < 8; c++) b[r][c] = line[c];
    }
    char me = 'B';
    int R, C;
    while (!full() && cin >> R >> C) {
        if (R == -1 && C == -1) break;
        if (b[R][C] != '_') continue;                     // occupied: ignored, same player again
        char other = me == 'B' ? 'W' : 'B';
        b[R][C] = me;
        for (int dr = -1; dr <= 1; dr++)
            for (int dc = -1; dc <= 1; dc++) {
                if (dr == 0 && dc == 0) continue;
                int r = R + dr, c = C + dc, run = 0;
                while (r >= 0 && r < 8 && c >= 0 && c < 8 && b[r][c] == other) { r += dr; c += dc; run++; }
                if (run > 0 && r >= 0 && r < 8 && c >= 0 && c < 8 && b[r][c] == me)
                    for (int k = 1; k <= run; k++) b[R + dr * k][C + dc * k] = me;
            }
        me = other;
    }
    int black = 0, white = 0;
    for (int r = 0; r < 8; r++) {
        for (int c = 0; c < 8; c++) {
            cout << b[r][c];
            if (b[r][c] == 'B') black++;
            if (b[r][c] == 'W') white++;
        }
        cout << '\n';
    }
    if (black > white) cout << "black wins" << '\n';
    else if (white > black) cout << "white wins" << '\n';
    else cout << "draw" << '\n';
    return 0;
}