Compilare: main.cpp: In function 'int main()': main.cpp:28:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 28 | if(ind[j]<poz[j].size()) | ~~~~~~^~~~~~~~~~~~~~ main.cpp:39:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 39 | while(ind[j]<poz[j].size() && poz[j][ind[j]]<pozz) | ~~~~~~^~~~~~~~~~~~~~ main.cpp:39:40: warning: 'pozz' may be used uninitialized [-Wmaybe-uninitialized] 39 | while(ind[j]<poz[j].size() && poz[j][ind[j]]<pozz) | ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~ main.cpp:25:13: note: 'pozz' was declared here 25 | int pozz; | ^~~~