提交时间:2025-11-06 14:46:27
运行 ID: 38829
#include <bits/stdc++.h> #define int long long using namespace std; int a,b,c; signed main(){ cin>>a>>b>>c; if (a==0){ if (b==0){ cout<<"Max: "<<c<<".00000\n"; cout<<"Min: "<<c<<".00000\n"; } else{ printf("Max: +inf\n"); printf("Min: -inf\n"); } } else if (a>0){ long double z=b*1.0/(-2.0*a); printf("Max: +inf\n"); printf("Min: %.5Lf\n",(1.0*a)*z*z+(1.0*b)*z+(1.0*c)); } else{ long double z=b*1.0/(-2.0*a); printf("Max: %.5Lf\n",(1.0*a)*z*z+(1.0*b)*z+(1.0*c)); printf("Min: -inf\n"); } return 0; }