Compilare: user.cpp: In function ‘void read()’: user.cpp:16:11: warning: unused variable ‘ls’ [-Wunused-variable] char *ls; ^ user.cpp: In function ‘void solve()’: user.cpp:58:11: warning: unused variable ‘mrr’ [-Wunused-variable] int s,mrr,Cx= 0,Cy = 0,R = 0; ^ user.cpp: In function ‘void read()’: user.cpp:15:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:17:33: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(v[1].c,NMAX + 5,stdin); ^ user.cpp:19:37: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(v[i].c,NMAX + 5,stdin); ^ user.cpp: In function ‘int main()’: user.cpp:80:37: 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:81:39: 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); ^