留下做题痕迹

致敬传奇写法if else
还有continue
情况：$abs(a_{i})=1$,$n=1$,$n=0$,$n$为初始值，以及正常情况的$a_{i}<0$、$a_{i}=0$或$a_{i}>0$，确实挺多条件的

#include<bits/stdc++.h>
using namespace std;

int main(){
	int n,xs;
	bool second=1;
	scanf("%d",&n);
	while(n>=0){
		scanf("%d",&xs);
		if(xs==0){
			n--;
			continue;
		}
        if(second){
            if(abs(xs)==1){
    			if(xs>0)printf("x^%d",n);
    			else printf("-x^%d",n);
                second=0;
    			n--;
    			continue;
    		}
			printf("%dx^%d",xs,n);
			second=0;
			n--;
			continue;
		}
		if(n==0){
			if(xs>0)printf("+%d",xs);
			else printf("%d",xs);
			n--;
			continue;
		}
		if(abs(xs)==1){
			if(n==1){
				if(xs<0)printf("-x");
				else printf("+x");
				n--;
				continue;
			}
			if(xs>0)printf("+x^%d",n);
			else printf("-x^%d",n);
			n--;
			continue;
		}
		if(n==1){
			if(xs<0)printf("%dx",xs);
			else printf("+%dx",xs);
			n--;
			continue;
		}
		if(xs>0)printf("+%dx^%d",xs,n);
		else printf("%dx^%d",xs,n);
		n--;
	}
	return 0;
}