Greeper @ 2024-09-08 09:31:15
#include<bits/stdc++.h>
using namespace std;
int main()
{
int n;
cin>>n;
bool fir=1;
for(int i=n;i>=0;i--)
{
int x;
cin>>x;
bool f=0;
if(x<0)
{
f=1;
x=-x;
}
if(x==0)
{
continue;
}
if(fir)
{
if(f)
{
cout<<'-';
}
if(x!=1||i==0)
{
cout<<x;
}
if(i)
cout<<"x^"<<i;
fir=0;
}
else
{
if(f)
{
cout<<'-';
}
else
{
cout<<'+';
}
if(x!=1||i==0)
{
cout<<x;
}
if(i)
cout<<"x^"<<i;
}
}
return 0;
}by Lisuyang @ 2024-09-08 11:18:06
@Greeper
#include <iostream>
using namespace std;
int main(){
int n,a;
scanf("%d", &n);
for(int i = n;i >= 0; -- i){
scanf("%d", &a);
if(a){
if(i != n && a > 0) printf("+");
if(abs(a) > 1 || i == 0) printf("%d", a);
if(a == -1 && i) printf("-");
if(i > 1) printf("x^%d", i);
if(i == 1) printf("x");
}
}
return 0;
}