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#include <cstdio>
#include <cstring>

int main(void)
{
    int i, n, t = 0;

    scanf("%d", &n);

    for (i = 1; i <= n; i++) {
        char tn[8];
        int s;

        scanf("%s %d", tn, &s);

        if (strcmp(tn, "TAK"))
            continue;

        if (t < 10 || s < 2) {
            printf("%d ", i);
            t++;
        }

        if (t >= 20)
            break;
    }
    printf("\n");
    return 0;
}