Compilare: user.cpp: In function ‘void bf()’: user.cpp:23:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<L[a].size();i++){ ^ user.cpp:28:44: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] || C[ L[a][i].first ] == k && L[a][i].first!=n){ ^ user.cpp: In function ‘int verif(int)’: user.cpp:49:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<L[a].size();i++){ ^ user.cpp: In function ‘int main()’: user.cpp:68:27: 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:70:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&v[i]); ^ user.cpp:72:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&m); ^ user.cpp:74:41: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d%d%d",&a,&b,&c,&d); ^