Compilare: main.cpp: In function 'int cauta(int)': main.cpp:63:20: 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:84:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0;i <= s.size()/vsq+1; ++i) ~~^~~~~~~~~~~~~~~~~ main.cpp:71:35: 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:72:37: 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:74:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n,&m); ^ main.cpp:76:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &x,&y); ^ main.cpp:88:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &c,&x); ^ main.cpp:90:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &y); ^