Compilare: user.cpp: In function ‘void solve()’: user.cpp:77:9: warning: unused variable ‘minim’ [-Wunused-variable] int minim,lg = 1; ^ user.cpp:77:15: warning: unused variable ‘lg’ [-Wunused-variable] int minim,lg = 1; ^ user.cpp: In function ‘void read()’: user.cpp:63:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:64:31: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(c,1,NMAX*NMAX,stdin); ^ user.cpp: In function ‘int main()’: user.cpp:88:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pscpld2d.in","r",stdin); ^ user.cpp:89:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pscpld2d.out","w",stdout); ^