Compilare: main.cpp:10:1: warning: 'typedef' was ignored in this declaration 10 | typedef struct node; | ^~~~~~~ main.cpp: In function 'int main()': main.cpp:84:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 84 | for(int i = 1 ; i < M[col].size() ; ++ i){ | ~~^~~~~~~~~~~~~~~ main.cpp:118:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 118 | for(int i = 1 ; i < P[line].size() ; ++ i){ | ~~^~~~~~~~~~~~~~~~ main.cpp:119:17: warning: variable 'now' set but not used [-Wunused-but-set-variable] 119 | pii now = P[line][i]; | ^~~