Compilare: main.cpp: In function 'void dfs(int)': main.cpp:54:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<queryStr>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 54 | for(int it = 0; it<updates[i].queries.size(); it++) | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:84:44: warning: narrowing conversion of 'x' from 'int' to 'short int' [-Wnarrowing] 84 | updates[nr].queries.push_back({x,y,0}); | ^ main.cpp:84:46: warning: narrowing conversion of 'y' from 'int' to 'short int' [-Wnarrowing] 84 | updates[nr].queries.push_back({x,y,0}); | ^ main.cpp:73:22: warning: unused variable 'z' [-Wunused-variable] 73 | int type,x,y,z; | ^