Compilare: user.cpp: In function ‘int main()’: user.cpp:9:15: warning: unused variable ‘sum’ [-Wunused-variable] long long sum,bestsum=-2e9,mic=0,idx; ^ user.cpp:6:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ssm.in","r",stdin); ^ user.cpp:7:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ssm.out","w",stdout); ^ user.cpp:8:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:10:44: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(int i=1;i<=n;++i) scanf("%d",&s[i]); ^ user.cpp:14:61: warning: ‘idx’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(bestsum<s[i]-mic) bestsum=s[i]-mic,st= idx+1,dr=i; ^