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/* 2025
 * Maciej Szeptuch
 */
#include <cstdio>

int contestants;
int finalists;
char allowed[4];
int finals;

int main(void)
{
    scanf("%d", &contestants);
    for(int c = 0; c < contestants && finalists < 20; ++c)
    {
        scanf("%s %d", allowed, &finals);
        if(allowed[0] != 'T')
            continue;

        if(finalists < 10 || finals < 2)
        {
            printf("%d ", c + 1);
            ++finalists;
        }
    }
    puts("");
    return 0;
}