Compilare: main.cpp: In function 'int main()': main.cpp:69:13: warning: unused variable 'x' [-Wunused-variable] int x=i; ^ main.cpp:61:32: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("nr2.in","r",stdin); ^ main.cpp:62:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("nr2.out","w",stdout); ^ main.cpp:65:41: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lld%d%d%d%d",&l,&b,&n,&m,&p); ^