Compilare: In file included from /usr/include/c++/4.8/cassert:43:0, from user.cpp:5: user.cpp: In function ‘bool solve(int*, int, int)’: user.cpp:57:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] assert(v.size() == range); ^ user.cpp: In function ‘int main()’: user.cpp:64:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &k); ^ user.cpp:69:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &output[i]); ^