Compilare: main.cpp: In function 'int main()': main.cpp:75:43: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Query>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 75 | for ( ; queries[q_i].one_block && q_i < queries.size() ; ++q_i) { | ~~~~^~~~~~~~~~~~~~~~ main.cpp:90:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Query>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 90 | for ( ; q_i < queries.size() ; ++q_i) { | ~~~~^~~~~~~~~~~~~~~~ main.cpp:104:18: warning: 'anchor' may be used uninitialized [-Wmaybe-uninitialized] 104 | for (int i = anchor - 1 ; i >= queries[q_i].left ; --i) { | ^ main.cpp:89:9: note: 'anchor' was declared here 89 | int anchor; | ^~~~~~ main.cpp:88:9: warning: 'dr' may be used uninitialized [-Wmaybe-uninitialized] 88 | int dr, current_block = -1; | ^~