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#include <bits/stdc++.h>
using namespace std;
#define rep(i,a,n) for (int i=(a);i<(n);i++)
#define per(i,a,n) for (int i=(n)-1;i>=(a);i--)
#define pb push_back
#define eb emplace_back
#define mp make_pair
#define all(x) (x).begin(),(x).end()
#define fi first
#define se second
#define SZ(x) ((int)(x).size())
typedef vector<int> VI;
typedef basic_string<int> BI;
typedef long long ll;
typedef pair<int,int> PII;
typedef double db;
mt19937 mrand(1111); 
const ll mod=1000000007;
int rnd(int x) { return mrand() % x;}
ll powmod(ll a,ll b) {ll res=1;a%=mod; assert(b>=0); for(;b;b>>=1){if(b&1)res=res*a%mod;a=a*a%mod;}return res;}
ll gcd(ll a,ll b) { return b?gcd(b,a%b):a;}
// head

const int N=410;
int n,tt;
char ss[111];
int main() {
	scanf("%d",&n);
	BI p1,p2;
	rep(i,1,n+1) {
		scanf("%s%d",ss,&tt);
		if (ss[0]=='N') continue;
		if (SZ(p1)<10) p1.pb(i);
		else if (tt<2&&SZ(p2)<10) p2.pb(i);
	}
	p1+=p2;
	for (auto x:p1) printf("%d ",x); puts("");
}