Compilare: main.cpp: In function 'int main()': main.cpp:81:53: warning: suggest parentheses around '-' inside '<<' [-Wparentheses] 81 | st[p][i]=max(st[p-1][i], st[p-1][i+(1<<p-1)]); | ~^~ main.cpp:102:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 102 | for (int i=0; i<it.se.size(); i++) | ~^~~~~~~~~~~~~ main.cpp:103:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 103 | for (int j=i; j<it.se.size(); j++) | ~^~~~~~~~~~~~~ main.cpp:100:13: warning: unused variable 'val' [-Wunused-variable] 100 | int val=it.fi; | ^~~