Compilare: user.cpp: In function ‘int main()’: user.cpp:32:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (step=1;step<(q.size()-1);step<<=1); ^ user.cpp:37:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (j+step<(q.size()-1) && q[j+step]<=t[i]) ^ user.cpp:15:30: 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); ^ user.cpp:16:32: 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); ^ user.cpp:18:15: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&N); ^ user.cpp:23:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&t[i]); ^