你好

看什么！！！！！！？？？？？？我也不会！ include <bits/stdc++.h> using namespace std;

int main() { int a, b, c; scanf("%d %d\n%d", &a, &b, &c); int s = floor(a / c), d = floor(b / c); int f = s * d; printf("%d", f); return 0; }