WA60pts求调

#include<bits/stdc++.h>
using namespace std;
#define int long long
const int N=3e7+7;
struct node{
	int s,id;
}stk[N];
int n,a[N],ans[N],tot=0;
signed main(){
	cin>>n;
	for(int i=1;i<=n;i++)scanf("%lld",&a[i]);
	for(int i=n;i>=1;i--){
		while(tot!=0&&a[i]>stk[tot].s)tot--;
		if(!tot)ans[i]=0;
		else ans[i]=stk[tot].id;
		stk[++tot].s=a[i];
		stk[tot].id=i;
	}
	for(int i=1;i<=n;i++)printf("%lld ",ans[i]);
}