龙虎斗2020.12.08

#include<stdio.h>
#include<math.h>
int main(){
	int n,m,a[100000],s1,s2,p1,p2,i,zhangli1=0,zhangli2=0,cha,min=10000,t,j;
	scanf("%d",&n);
	for(i=0;i<n;i++){
		scanf("%d",&a[i]);
	}
	scanf("%d %d %d %d",&m,&p1,&s1,&s2);
	a[p1-1]+=s1;
	for(i=0;i<n;i++){
		a[i]+=s2;
		zhangli1=0,zhangli2=0;
		for(t=0;t<m-1;t++){
			zhangli1+=a[t]*(m-1-t);
		}
		for(j=m;j<n;j++){
			zhangli2+=a[j]*(j+1-m);
		}
		cha=abs(zhangli1-zhangli2);
		if(cha<min){
			min=cha;
			p2=i+1;
		}
		a[i]-=s2;
	}
		printf("%d\n",p2);
		return 0;
}