Compilare: main.cpp: In function 'int cauta(int)': main.cpp:62:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0;i<=sq.size();++i) ~^~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:83:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0;i <= s.size()/vsq+1; ++i) ~~^~~~~~~~~~~~~~~~~ main.cpp:70:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("arbore.in","r",stdin); ^ main.cpp:71:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("arbore.out","w",stdout); ^ main.cpp:73:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n,&m); ^ main.cpp:75:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &x,&y); ^ main.cpp:87:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &c,&x); ^ main.cpp:89:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &y); ^