HDU 4925 Apple Tree 找呀找规律

间隔着取_(:зゝ∠)_

#include <iostream>
#include <cstdio>
#include <algorithm>
using namespace std;
typedef long long ll;
int n, m;
int init(int i, int j) {
    int cnt = 1;
    if(i-1 >= 1) cnt *= 2;
    if(i+1 <= n) cnt *= 2;
    if(j-1 >= 1) cnt *= 2;
    if(j+1 <= m) cnt *= 2;
    return cnt;
}
int main() {
    int T; scanf("%d", &T);
    while(T-- > 0) {
        scanf("%d%d", &n, &m);
        if(n == 1 && m == 1) {
            cout << 1 << endl;
            continue;
        }
        ll ans = 0;
        for(int i = 1; i <= n; i ++) {
            for(int j = 1+(i&1); j <= m; j += 2) {
                ans += init(i, j);
            }
        }
        cout << ans << endl;
    }
    return 0;
}

HDU 4925 Apple Tree 找呀找规律,布布扣,bubuko.com

HDU 4925 Apple Tree 找呀找规律

原文：http://blog.csdn.net/qq574857122/article/details/38427249