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#include <bits/stdc++.h>

constexpr int W=20, N=10'000;

struct zaw {
    bool c;
    char x;
};

int main() {
    std::vector<int> r;
    r.reserve(W);
    int n;
    zaw t[N];
    
    scanf("%d", &n);
    for (int i=0; i!=n; ++i) {
        char s[4];
        scanf("%s", s);
        t[i].c = s[0]=='T';
        scanf("%hhd", &t[i].x);
    }

    for (int i=0; (i!=n) && (r.size()<10); ++i) {
        if (t[i].c) {
            t[i].c = false;
            r.push_back(i+1);
        }
    }

    for (int i=0; (i!=n) && (r.size()<20); ++i) {
        if (t[i].c && (t[i].x<2)) {
            r.push_back(i+1);
        }
    }

    std::sort(r.begin(), r.end());

    for (auto it=r.begin(); it!=r.end(); ++it) {
        printf("%d ", *it);
    }
    printf("\n");
    return 0;
}