Compilare: main.cpp: In function 'void backtrUpperLevel(int, int)': main.cpp:209:50: warning: suggest parentheses around assignment used as truth value [-Wparentheses] mat[1][i][j] = comp[1][i][j] = szs[1][i][j] = 0; ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:459:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int st = 1; st <= Map.size(); ++ st) ~~~^~~~~~~~~~~~~ main.cpp:411:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("cuburi.in", "r", stdin); ^ main.cpp:413:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("cuburi.out", "w", stdout); ^