Compilare: user.cpp: In function ‘void build(int, int, int)’: user.cpp:93:18: warning: overflow in implicit constant conversion [-Woverflow] Arb[nod].minn=INFINIT; Arb[nod].maxx=-INFINIT; Arb[nod].diff=INFINIT; ^ user.cpp:93:41: warning: overflow in implicit constant conversion [-Woverflow] Arb[nod].minn=INFINIT; Arb[nod].maxx=-INFINIT; Arb[nod].diff=INFINIT; ^ user.cpp:93:65: warning: overflow in implicit constant conversion [-Woverflow] Arb[nod].minn=INFINIT; Arb[nod].maxx=-INFINIT; Arb[nod].diff=INFINIT; ^ user.cpp: In function ‘void update(int, int, int, int, int)’: user.cpp:122:30: warning: overflow in implicit constant conversion [-Woverflow] Arb[nod].minn=INFINIT; ^ user.cpp:123:30: warning: overflow in implicit constant conversion [-Woverflow] Arb[nod].maxx=-INFINIT; ^ user.cpp: In function ‘void read()’: user.cpp:66:33: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(s,sizeof(s),stdin); ^ user.cpp:82:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("\n"); ^ user.cpp: In function ‘int main()’: user.cpp:180:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("zeap.in","r",stdin); ^ user.cpp:181:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("zeap.out","w",stdout); ^