#include <bits/stdc++.h>
using namespace std;
using T = array<int, 3>;
const T ID = {-1, 1, 0};
T comb(T &x, T &y){
return {max(y[0], x[0] + y[2]), min(y[1], x[1] + y[2]), x[2] + y[2]};
}
int n, s = 1;
vector<T> a;
signed main(){
cin.tie(0)->sync_with_stdio(0);
cin >> n;
while((s+=s)<n);
a.assign(2*s, ID);
while(n--){
int i, v; cin >> i >> v;
--i; v = 2*v-3;
a[i+=s] = {v, v, v};
while(i/=2) a[i] = comb(a[2*i], a[2*i+1]);
if(a[1][0] > 0 && a[1][1] < 0) cout << "?\n";
else cout << (a[1][0] > 0 ? "<\n" : ">\n");
}
}
