Compilare: user.cpp: In function ‘void Solve1()’: user.cpp:22:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<a.size();++i) ^ user.cpp: In function ‘void Solve2()’: user.cpp:64:26: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘std::vector<int>::size_type {aka long unsigned int}’ [-Wformat=] printf("%d ",a.size()); ^ user.cpp:65:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<a.size();++i) printf("%d ",a[i]); ^ user.cpp:37:15: warning: unused variable ‘j’ [-Wunused-variable] int sum,i,j; ^ user.cpp: In function ‘void Solve1()’: user.cpp:13:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&k); ^ user.cpp:17:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&x); ^ user.cpp: In function ‘void Solve2()’: user.cpp:39:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld",&pos); ^ user.cpp: In function ‘void Read()’: user.cpp:72:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&Q); ^ user.cpp:75:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&type); ^ user.cpp: In function ‘int main()’: user.cpp:84:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("order3.in","r",stdin); ^ user.cpp:85:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("order3.out","w",stdout); ^