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#1807. 【2017.3 长乐省选集训 Day7 T3】石子游戏

https://sjzezoj.com/submission/66132
This commit is contained in:
Baoshuo Ren 2022-12-22 17:36:49 +08:00
parent 5305fbc8e8
commit 15d78f166d
Signed by: baoshuo
GPG Key ID: 00CB9680AB29F51A
42 changed files with 185 additions and 0 deletions

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#include <iostream>
using std::cin;
using std::cout;
const char endl = '\n';
const int N = (1 << 16) + 5;
int t, k, a[17][N];
int main() {
std::ios::sync_with_stdio(false);
cin.tie(nullptr);
cin >> t;
while (t--) {
int ans = 0, sum = 0;
cin >> k;
for (int i = 0; i < k; i++) {
for (int j = 0; j < 1 << i; j++) {
cin >> a[i][j];
if ((i + k) % 2) {
sum ^= a[i][j];
}
}
}
for (int i = 0; i < k; i++) {
for (int j = 0; j < 1 << i; j++) {
if ((i + k) % 2) {
sum ^= a[i][j];
if (sum <= a[i][j]) {
ans += 1 + (i != k - 1);
}
sum ^= a[i][j];
} else {
sum ^= a[i + 1][j << 1];
if (a[i + 1][j << 1] <= sum && sum <= a[i + 1][j << 1] + a[i][j]) ans++;
sum ^= a[i + 1][j << 1];
sum ^= a[i + 1][j << 1 | 1];
if (a[i + 1][j << 1 | 1] <= sum && sum <= a[i + 1][j << 1 | 1] + a[i][j]) ans++;
sum ^= a[i + 1][j << 1 | 1];
}
}
}
cout << (sum ? ans : 0) << endl;
}
return 0;
}

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