for (int i = n; i; --i)
for (int j = i + 1; j <= n; ++j)
fms(h[i], h[j], C[j][i]);
int ans = 0;
for (int i = 1; i <= n; ++i)
reduce(ans += h[i] - mod);
太好了太好了,我会了!!!
for (int i = n; i; --i)
for (int j = i + 1; j <= n; ++j)
fms(h[i], h[j], C[j][i]);
int ans = 0;
for (int i = 1; i <= n; ++i)
reduce(ans += h[i] - mod);
太好了太好了,我会了!!!