#include <stdio.h>
int main(void) { int a[100001]; int i, n, temp, temp2; int min, max; int first = 1; char ch; scanf("%d", &n); for (i = 0; i < n; i++) { do { scanf("%d", &temp); if (first) { min = max = temp; first = 0; } else { if (temp < min) min = temp; if (temp > max) max = temp; } a[temp]++; ch = getchar(); } while (ch == ' '); } for (i = min; i < max; i++) { if (a[i] == 2) temp = i; if (a[i] == 0) temp2 = i; } printf("%d %d\n", temp2, temp); return 0; }
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