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

#define N 511
/* or 512 */

char s[N][N + 1];

int main() {
    int i, j, k, t;
    for (i = 0; i < N; ++i) {
        for (j = 0; j < N; ++j) {
            s[i][j] = 'a';
        }
    }
    k = 0;
    for (t = 0; t < 200; ++t)
    for (i = 0; i < N; ++i) {
        for (j = 0; j < N; ++j) {
            if (0 == strcmp(s[i], s[j])) {
                ++k;
            }
        }
    }
    printf("%d\n", k);
    return 0;
}