Compilare: main.cpp: In function 'bool Check(std::pair<int, int>, int)': main.cpp:28:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < b[pos.first][pos.second].size(); ++i) ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void Lee(int, int)': main.cpp:54:192: warning: suggest parentheses around '&&' within '||' [-Wparentheses] if (Inside(pos) && ((b[pos.first][pos.second].empty() && !a[pos.first][pos.second]) || (!b[pos.first][pos.second].empty() && Check(pos, a[q.front().first][q.front().second] + 1)) && /*!a[pos.first][pos.second] &&*/ (pos.first != w || pos.second != 1))) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~