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

int main(void) {
    int grid[1000][1000] = {0};

    int x1, y1, x2, y2;
    while (scanf("%d,%d -> %d,%d\n", &x1, &y1, &x2, &y2) != EOF) {
        /* key: for vert/horiz lines doesn't matter which one you
         * start at (since you draw the same line either way */
        if (x1 == x2) {
            int dist = abs(y1 - y2);
            int start = y1 < y2 ? y1 : y2;
            for (int i = start; i <= start + dist; i++) {
                grid[x1][i]++;
            }
        } else if (y1 == y2) {
            int dist = abs(x1 - x2);
            int start = x1 < x2 ? x1 : x2;
            for (int i = start; i <= start + dist; i++) {
                grid[i][y1]++;
            }
        }
    }
    
    int count = 0;
    for (int r = 0; r < 1000; r++) {
        for (int c = 0; c < 1000; c++) {
            if (grid[r][c] > 1) {
                count++;
            }
        }
    }
    printf("%d\n", count);
    return 0;
}