2465求助

//我来helloworld上课（4.28晚上19:54）王昊辰和王津博的左边一个教室。

include

using namespace std;

int main() { int n, m; long long sum; cin >> n >> m; for (int i = 1; i <= m / n; i++) { for (int j = 1; j <= 8; j++) { sum+=jj; } } int t = (m % n) (m % n); sum += t; cout<<sum; } //12741哪错了？