Compilare: main.cpp: In function 'std::vector<int> getleft(int*, int)': main.cpp:27:41: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 27 | for(int i = 1 , j = 0 ; i <= n && j < r.size () ; ){ | ~~^~~~~~~~~~~ main.cpp: In function 'std::vector<int> getright(int*, int)': main.cpp:44:41: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 44 | for(int i = 1 , j = 0 ; i <= n && j < r.size () ; ){ | ~~^~~~~~~~~~~ main.cpp: In function 'void solve2()': main.cpp:93:17: warning: unused variable 'lind' [-Wunused-variable] 93 | int lind = perm [j]; | ^~~~ main.cpp:89:13: warning: unused variable 'lind' [-Wunused-variable] 89 | int lind (-1); | ^~~~ main.cpp:63:27: warning: variable 'fq' set but not used [-Wunused-but-set-variable] 63 | static int perm [5] , fq [5]; | ^~ main.cpp: In function 'int main()': main.cpp:141:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 141 | for(int i = 1 ; i < sol.size () - 1 ; ++ i) | ~~^~~~~~~~~~~~~~~~~ main.cpp:146:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 146 | for(int i = 0 ; i < sol.size () - 1 ; ++ i) | ~~^~~~~~~~~~~~~~~~~ main.cpp: In function 'void solve2()': main.cpp:121:30: warning: 'ind' may be used uninitialized in this function [-Wmaybe-uninitialized] 121 | out (getright (perm , ind)); | ^