Compilare: user.cpp: In function ‘int main()’: user.cpp:41:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<succesor[f].size(); ++i) ^ user.cpp:50:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<sol.size(); ++i) ^ user.cpp:16:13: warning: unused variable ‘a’ [-Wunused-variable] int n,i,a; ^ user.cpp:18:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&n); ^ user.cpp:19:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%c",&c); ^ user.cpp:22:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%c",&c); ^