Compilare: main.cpp: In function 'int32_t main()': main.cpp:88:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0 ; i < bau.size() ; ++ i) { ~~^~~~~~~~~~~~ main.cpp:89:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j = 0 ; j < bau[i].size() - 1 ; ++ j) { ~~^~~~~~~~~~~~~~~~~~~ main.cpp:98:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j = 0 ; j < bau[i].size() ; ++ j) { ~~^~~~~~~~~~~~~~~ main.cpp:110:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < query.size(); ++i) { ~~^~~~~~~~~~~~~~ main.cpp:66:44: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("cabana2.in", "r", stdin) ; ^ main.cpp:67:46: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("cabana2.out", "w", stdout) ; ^ main.cpp:68:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ("%d", &n) ; ^ main.cpp:71:53: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ("%d %d", &vv[i].x, &vv[i].y) ; ^