Compilare: user.cpp: In function ‘int solve1()’: user.cpp:43:31: warning: the address of ‘tmp’ will always evaluate as ‘true’ [-Waddress] if(!isA[i]&&!isB[i]&&!tmp)return 0; ^ user.cpp: In function ‘int solve2()’: user.cpp:98:31: warning: the address of ‘tmp’ will always evaluate as ‘true’ [-Waddress] if(!isA[i]&&!isB[i]&&!tmp)return 0; ^ user.cpp: In function ‘int main()’: user.cpp:131:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d %d",&N,&NA,&NB); ^ user.cpp:134:48: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(int i=1;i<=NA;i++){fscanf(f,"%d",&A[i]);isA[A[i]]=1;} ^ user.cpp:135:48: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(int i=1;i<=NB;i++){fscanf(f,"%d",&B[i]);isB[B[i]]=1;} ^