Compilare: main.cpp: In function 'int main()': main.cpp:24:30: warning: unused variable 'k' [-Wunused-variable] int n,i,x,j,sol=0,maxx=0,k,lim; ^ main.cpp:24:32: warning: unused variable 'lim' [-Wunused-variable] int n,i,x,j,sol=0,maxx=0,k,lim; ^~~ main.cpp:22:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] { freopen("rick.in", "r",stdin); ^ main.cpp:23:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("rick.out", "w",stdout); ^ main.cpp:25:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ main.cpp:39:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x); ^