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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int main(void) {
char grid[512][32];
int h = 0;
while (EOF != scanf("%s\n", grid[h])) {
h++;
}
int w = strlen(grid[0]);
int trees = 0;
for (int x = 0, y = 0; y < h; x += 3, y += 1) {
trees += grid[y][x%w] == '#';
}
printf("%d\n", trees);
}
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