路灯代码

#include <iostream> #include <string> #include <vector> using namespace std; /*n个方格，亮pos pos-1 pos+1，X是障碍物*/ /*2 * 3 * ..x * 5 * ....x * */ /* * 1 * 2 * */ int main() {     int num = 0;
    int n = 0, k = 0;
    int count = 0;
    cin >> num;
    int tmp = num;
    vector<int> res(num, 0);
    string str;
    if (num >= 1 && num <= 1000) {         do {             cin >> n;
            if (n >= 1 && n <= 1000) {                 cin >> str;
                if (str.length() == n) {                     num--;
                    int i = 0;
                    while (i < str.length()) {                         if (str[i] == '.') {                             count++;
                            if (count == 3) {                                 res[k]++;
                                count = 0;
                            }                         }                         else if (str[i] == 'x') {                             if (count == 0) {                                 i++;
                                continue;
                            }                             res[k]++;
                            count = 0;
                        }                         else {                             break;
                        }                         ++i;
                    }                 }                 else {                     return 0;
                }             }             else {                 return 0;
            }             if (count > 0) {                 res[k]++;
                count = 0;
            }             k++;
        } while (num > 0);
 
        for (int i = 0; i < tmp; i++) {             cout << res[i] << endl;
        }     }     else {         return 0;
    }     return 0; }