测试点信息 3ms/564.00KB WA #1 Wrong Answer.wrong answer On line 1 column 1, read 0, expected 3. 3ms/564.00KB WA #2 Wrong Answer.wrong answer On line 1 column 1, read 0, expected 3. 4ms/680.00KB WA #3 Wrong Answer.wrong answer On line 1 column 1, read 0, expected N. 8ms/628.00KB AC #4 Accepted, 得分 2.ok accepted 11ms/692.00KB WA #5 Wrong Answer.wrong answer On line 1 column 1, read 0, expected 2. 10ms/748.00KB WA #6 Wrong Answer.wrong answer On line 1 column 1, read 0, expected 2. 3ms/608.00KB WA #7 Wrong Answer.wrong answer On line 1 column 1, read 0, expected 1. 3ms/556.00KB WA #8 Wrong Answer.wrong answer On line 1 column 1, read 0, expected 3. 3ms/556.00KB WA #9 Wrong Answer.wrong answer On line 1 column 1, read 0, expected 1. 3ms/556.00KB WA #10 Wrong Answer.wrong answer On line 1 column 1, read 0, expected 1. 3ms/556.00KB WA #11 Wrong Answer.wrong answer On line 1 column 1, read 0, expected 3. 3ms/556.00KB WA #12 Wrong Answer.wrong answer On line 1 column 1, read 0, expected 3. 3ms/608.00KB AC #13 Accepted, 得分 2.ok accepted 3ms/604.00KB WA #14 Wrong Answer.wrong answer On line 1 column 1, read 0, expected 1. 3ms/564.00KB WA #15 Wrong Answer.wrong answer On line 1 column 1, read 0, expected 1. 3ms/560.00KB WA #16 Wrong Answer.wrong answer On line 1 column 1, read 0, expected 2. 3ms/556.00KB WA #17 Wrong Answer.wrong answer On line 1 column 1, read 0, expected 1. 3ms/568.00KB AC #18 Accepted, 得分 2.ok accepted 3ms/604.00KB WA #19 Wrong Answer.wrong answer On line 1 column 1, read 0, expected 2. 3ms/556.00KB WA #20 Wrong Answer.wrong answer On line 1 column 1, read 0, expected 3. 3ms/556.00KB WA #21 Wrong Answer.wrong answer On line 1 column 1, read 0, expected N. 3ms/640.00KB WA #22 Wrong Answer.wrong answer On line 1 column 1, read 0, expected 1. 3ms/556.00KB WA #23 Wrong Answer.wrong answer On line 1 column 1, read 0, expected 2. 3ms/556.00KB WA #24 Wrong Answer.wrong answer On line 1 column 1, read 0, expected 1. 3ms/560.00KB WA #25 Wrong Answer.wrong answer On line 1 column 1, read 0, expected 3. 3ms/552.00KB WA #26 Wrong Answer.wrong answer On line 1 column 1, read 0, expected 1. 3ms/564.00KB WA #27 Wrong Answer.wrong answer On line 1 column 1, read 0, expected 3. 3ms/556.00KB WA #28 Wrong Answer.wrong answer On line 1 column 1, read 0, expected 1. 3ms/552.00KB WA #29 Wrong Answer.wrong answer On line 1 column 1, read 0, expected 4. 3ms/564.00KB AC #30 Accepted, 得分 2.ok accepted 4ms/556.00KB WA #31 Wrong Answer.wrong answer On line 1 column 1, read 0, expected N. 3ms/552.00KB AC #32 Accepted, 得分 2.ok accepted 4ms/564.00KB AC #33 Accepted, 得分 2.ok accepted 3ms/564.00KB WA #34 Wrong Answer.wrong answer On line 1 column 1, read 0, expected 3. 7ms/568.00KB WA #35 Wrong Answer.wrong answer On line 1 column 1, read 0, expected 6. 7ms/692.00KB WA #36 Wrong Answer.wrong answer On line 1 column 1, read 0, expected 2. 6ms/556.00KB WA #37 Wrong Answer.wrong answer On line 1 column 1, read 0, expected 1. 7ms/556.00KB WA #38 Wrong Answer.wrong answer On line 1 column 1, read 0, expected 1. 9ms/556.00KB WA #39 Wrong Answer.wrong answer On line 1 column 1, read 0, expected 5. 8ms/612.00KB WA #40 Wrong Answer.wrong answer On line 1 column 1, read 0, expected 1. 9ms/616.00KB WA #41 Wrong Answer.wrong answer On line 1 column 1, read 0, expected 1. 8ms/624.00KB AC #42 Accepted, 得分 2.ok accepted 10ms/684.00KB WA #43 Wrong Answer.wrong answer On line 1 column 1, read 0, expected 6. 10ms/680.00KB WA #44 Wrong Answer.wrong answer On line 1 column 1, read 0, expected 2. 10ms/676.00KB WA #45 Wrong Answer.wrong answer On line 1 column 1, read 0, expected 2. 10ms/684.00KB WA #46 Wrong Answer.wrong answer On line 1 column 1, read 0, expected 1. 11ms/700.00KB WA #47 Wrong Answer.wrong answer On line 1 column 1, read 0, expected 7. 10ms/616.00KB AC #48 Accepted, 得分 2.ok accepted 11ms/620.00KB WA #49 Wrong Answer.wrong answer On line 1 column 1, read 0, expected 2. 11ms/696.00KB WA #50 Wrong Answer.wrong answer On line 1 column 1, read 0, expected 2.

#include <iostream>
#include <vector>
using namespace std;
int main() {
    int n, m;
    cin >> n >> m;
    vector<vector<char>> board(n, vector<char>(m));
    for (int i = 0; i < n; ++i) {
        for (int j = 0; j < m; ++j) {
            cin >> board[i][j];
        }
    }

    int count = 0;
    for (int i = 0; i < n; ++i) {
        for (int j = 0; j < m; ++j) {
            if (board[i][j] == ' ') {
                if (i == n - 1 && j == m - 1) {
                    count += 2;
                } else if (i == n - 1 || j == m - 1) {
                    count += 1;
                }
            }
        }
    }

    if (count % 2 == 0) {
        cout << count / 2 << endl;
    } else {
        cout << "NO SOLUTION" << endl;
    }

    return 0;
}