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#include <cstdio>
#include <vector>
#include <string>

using namespace std;

int n;
vector<int> v;
char a[6];
int b;

main() {
    scanf("%d", &n);
    for (int i = 1; i <= n; i++) {
        scanf("%s%d", a, &b);
        if (a[0] == 'T') {
            if (v.size() < 10) {
                v.push_back(i);
            } else if (v.size() < 20 && b < 2) {
                v.push_back(i);
            }
        }
    }
    for (int i = 0; i < 20; i++) {
        printf("%d ", v[i]);
    }
    printf("\n");
    return 0;
}