Compilare: main.cpp: In function 'bool solve(int, int)': main.cpp:54:27: warning: suggest parentheses around assignment used as truth value [-Wparentheses] 54 | return veryNice[a][b] = 0; | ~~~~~~~~~~~~~~~^~~ main.cpp:56:27: warning: suggest parentheses around assignment used as truth value [-Wparentheses] 56 | return veryNice[a][b] = 1; | ~~~~~~~~~~~~~~~^~~ main.cpp:91:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 91 | if (nr == son2.size()) | ~~~^~~~~~~~~~~~~~ main.cpp:92:27: warning: suggest parentheses around assignment used as truth value [-Wparentheses] 92 | return veryNice[a][b] = 1; | ~~~~~~~~~~~~~~~^~~ main.cpp:94:27: warning: suggest parentheses around assignment used as truth value [-Wparentheses] 94 | return veryNice[a][b] = 0; | ~~~~~~~~~~~~~~~^~~