#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define LINE_MAX_LENGTH 256
#define MAX_VALUE_PER_HISTORY 64

int extrapolate(int history[], int history_num);
int extrapolate_backwards(int history[], int history_num);

int main() {
    char *p, *buf, c;

    buf = (char *)malloc(LINE_MAX_LENGTH);
    memset(buf, 0, LINE_MAX_LENGTH);
    p = buf;

    int part1 = 0, part2 = 0;

    while ((c = getchar()) != EOF) {
        *p++ = c;
        if (c == '\n') {
            int history[MAX_VALUE_PER_HISTORY], history_num = 0;
            p = buf;

            while (*p != '\0') {
                sscanf(p, "%i", &history[history_num]);
                history_num++;
                while(*p != ' ' && *p != '\n') p++;
                p++;
            }

            part1 += extrapolate(history, history_num);
            part2 += extrapolate_backwards(history, history_num);

            memset(buf, 0, LINE_MAX_LENGTH);
            p = buf;
        }
    }

    printf("%i\n", part1);
    printf("%i\n", part2);
    free(buf);
}

int extrapolate(int history[], int history_num) {
    int zeros = 1;
    for (int i = 0; i < history_num; i++) {
        if (history[i] != 0) {
            zeros = 0;
            break;
        }
    }

    if (zeros) {
        return 0;
    }

    int *new_history = (int*)malloc((history_num - 1) * sizeof(int));

    for (int i = 0; i < history_num - 1; i++) {
        new_history[i] = history[i+1] - history[i];
    }

    int result = extrapolate(new_history, history_num - 1) + history[history_num - 1];
    free(new_history);
    return result;
}

int extrapolate_backwards(int history[], int history_num) {
    int zeros = 1;
    for (int i = 0; i < history_num; i++) {
        if (history[i] != 0) {
            zeros = 0;
            break;
        }
    }

    if (zeros) {
        return 0;
    }

    int *new_history = (int*)malloc((history_num - 1) * sizeof(int));

    for (int i = 0; i < history_num - 1; i++) {
        new_history[i] = history[i+1] - history[i];
    }

    int result = history[0] - extrapolate_backwards(new_history, history_num - 1);
    free(new_history);
    return result;
}