Compilare: main.cpp: In function 'int main()': main.cpp:13:13: warning: unused variable 'j' [-Wunused-variable] int n,i,j,m,nr; ^ main.cpp:13:15: warning: unused variable 'm' [-Wunused-variable] int n,i,j,m,nr; ^ main.cpp:11:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("scmax.in","r",stdin); ^ main.cpp:12:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("scmax.out","w",stdout); ^ main.cpp:14:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ main.cpp:16:38: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] for(i=1;i<=n;i++){scanf("%d",&nr);v.push_back(nr);} ^