bool getL(vector<vector<double>> &vvi, int len, int &rx, int &ry) { for (int i = 0; i < vvi.size(); ++i) { for (int j = 0; j < vvi.size(); ++j) { if (vvi[i][j] <= len) { vvi[i][j] = int_max; rx = i; ry = j; return true; } } } return false; }