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#1807. 【2017.3 长乐省选集训 Day7 T3】石子游戏
https://sjzezoj.com/submission/66132
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S2OJ/1807/1807.cpp
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S2OJ/1807/1807.cpp
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#include <iostream>
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using std::cin;
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using std::cout;
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const char endl = '\n';
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const int N = (1 << 16) + 5;
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int t, k, a[17][N];
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int main() {
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std::ios::sync_with_stdio(false);
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cin.tie(nullptr);
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cin >> t;
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while (t--) {
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int ans = 0, sum = 0;
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cin >> k;
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for (int i = 0; i < k; i++) {
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for (int j = 0; j < 1 << i; j++) {
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cin >> a[i][j];
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if ((i + k) % 2) {
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sum ^= a[i][j];
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}
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}
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}
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for (int i = 0; i < k; i++) {
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for (int j = 0; j < 1 << i; j++) {
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if ((i + k) % 2) {
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sum ^= a[i][j];
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if (sum <= a[i][j]) {
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ans += 1 + (i != k - 1);
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}
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sum ^= a[i][j];
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} else {
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sum ^= a[i + 1][j << 1];
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if (a[i + 1][j << 1] <= sum && sum <= a[i + 1][j << 1] + a[i][j]) ans++;
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sum ^= a[i + 1][j << 1];
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sum ^= a[i + 1][j << 1 | 1];
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if (a[i + 1][j << 1 | 1] <= sum && sum <= a[i + 1][j << 1 | 1] + a[i][j]) ans++;
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sum ^= a[i + 1][j << 1 | 1];
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}
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}
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}
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cout << (sum ? ans : 0) << endl;
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}
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return 0;
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}
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