{

freopen("in.txt", "r", stdin);

freopen("out.txt", "w", stdout);

long long number[10001], n, i, j, temp, median;

i = 0;

while (scanf("%lld", &n) != EOF) {

number[i++] = n;

sort(number, number + i);

if (i % 2 == 0) {

median = (number[(i / 2) - 1] + number[i / 2]) / 2;

}

else {

median = number[i / 2];

}

printf("%lld\n", median);

}

return 0;