Compilare: user.cpp: In function ‘bool ok(int)’: user.cpp:19:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(S.size()<=k) {k-=S.size();S.clear();} ^ user.cpp: In function ‘int main()’: user.cpp:43:22: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘long long int’ [-Wformat=] fprintf(g,"%d",st); ^ user.cpp:28:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d",&N,&K); ^ user.cpp:30:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&V[i]); ^