Compilare: user.cpp: In function ‘int main()’: user.cpp:61:45: warning: narrowing conversion of ‘((-((((long long int)tmp.dreapta::b) * ((long long int)y)) + tmp.dreapta::c)) / ((long long int)tmp.dreapta::a))’ from ‘long long int’ to ‘int’ inside { } [-Wnarrowing] S.insert({y,-(1LL*tmp.b*y+tmp.c)/tmp.a}); ^ user.cpp:47:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&N,&M); ^ user.cpp:50:41: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d",&P[i].x,&P[i].y); ^ user.cpp:69:40: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&tmp.x,&tmp.y); ^