#include <cstdio>
#include <cstdlib>
#include <cassert>
#define SZ_MAX 110
#define max(x, y) ((x) > (y) ? (x) : (y))
int left_whites[SZ_MAX][SZ_MAX]; // including the itself
char board[SZ_MAX][SZ_MAX];
int sz;
int main ()
{
while (scanf ("%d", &sz) == 1) {
for (int i=0; i<sz; ++i)
scanf ("%s", board[i]);
for (int i=0; i<sz; ++i) {
for (int k=0; k<sz; ++k) {
left_whites[i][k] = 0;
int t = k;
while (t >= 0 && board[i][t] == '.') {
++left_whites[i][k];
--t;
}
}
}
#ifdef _DEBUG
printf ("left_whites[][]:\n");
for (int i=0; i<sz; ++i) {
for (int k=0; k<sz; ++k)
printf ("%4d", left_whites[i][k]);
printf ("\n");
}
#endif
int ans = 0;
for (int i=0; i<sz; ++i) {
for (int k=0; k<sz; ++k) {
int right_most_wall = -1;
int t = i;
while (t >= 0 && board[t][k] != '#') {
right_most_wall = max (right_most_wall, k - left_whites[t][k]);
ans += (k - right_most_wall);
--t;
}
#ifdef _DEBUG
printf ("ans = %d\n", ans);
#endif
}
}
printf ("%d\n", ans);
}
return 0;
}