Compilare: main.cpp: In function 'int main()': main.cpp:55:17: warning: unused variable 'ind' [-Wunused-variable] int n,i,x,y,ind; ^~~ main.cpp:56:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("plimbare.in","r",stdin); ^ main.cpp:57:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("plimbare.out","w",stdout); ^ main.cpp:58:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ main.cpp:61:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&x,&y); ^