Compilare: main.cpp: In function 'void build_merge_tree(int, int, int)': main.cpp:62:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 62 | while(i<V[2*node].size() && j<V[2*node+1].size()){ | ~^~~~~~~~~~~~~~~~~ main.cpp:62:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 62 | while(i<V[2*node].size() && j<V[2*node+1].size()){ | ~^~~~~~~~~~~~~~~~~~~ main.cpp:68:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 68 | while(i<V[2*node].size()) | ~^~~~~~~~~~~~~~~~~ main.cpp:70:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 70 | while(j<V[2*node+1].size()) | ~^~~~~~~~~~~~~~~~~~~ main.cpp:74:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 74 | for(i=1;i<V[node].size();++i) | ~^~~~~~~~~~~~~~~ main.cpp: In function 'void Query_merge(int, int, int, int, int, int)': main.cpp:99:19: warning: unused variable 'H' [-Wunused-variable] 99 | long long H=S[node][S[node].size()-1],J=srt[val]*S[node].size(); | ^ main.cpp:99:47: warning: unused variable 'J' [-Wunused-variable] 99 | long long H=S[node][S[node].size()-1],J=srt[val]*S[node].size(); | ^ main.cpp:101:19: warning: unused variable 'Q' [-Wunused-variable] 101 | long long Q=S[node][S[node].size()-1]-srt[val]*S[node].size()-2*(S[node][ANS]-srt[val]*(ANS+1)); | ^