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https://git.sb/baoshuo/OI-codes.git
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ecea56b0ac
commit
9619e98817
86
S2OJ/1462/1462.cpp
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86
S2OJ/1462/1462.cpp
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#include <iostream>
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#include <algorithm>
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#include <limits>
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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 = 3e5 + 5;
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int t, n, a[N], d[N], cnt[N], f[N][35], g[N];
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int calc(int l, int r) {
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if (d[l] == 0) return 1;
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std::for_each(f + l, f + r + 1, [](int *it) { std::fill_n(it, 35, -1); });
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f[l][cnt[l]] = l - 1;
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for (int i = l + 1; i <= r; i++) {
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f[i][cnt[i]] = i - 1;
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for (int j = cnt[i] + 1; j <= 32; j++) {
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if (f[f[i][j - 1]][j - 1] == -1) break;
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f[i][j] = f[f[i][j - 1]][j - 1];
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if (f[i][j] < l) break;
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}
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}
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std::fill(g + l, g + r + 1, std::numeric_limits<int>::max());
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g[l - 1] = 0;
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for (int i = l; i <= r; i++) {
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for (int j = 0; j <= 32; j++) {
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if (~f[i][j]) {
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g[i] = std::min(g[i], g[f[i][j]] + 1);
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}
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}
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}
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return g[r];
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}
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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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cin >> n;
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for (int i = 1; i <= n; i++) {
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cin >> a[i];
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}
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for (int i = 1; i < n; i++) {
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d[i] = a[i + 1] - a[i];
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}
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for (int i = 1; i < n; i++) {
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cnt[i] = 0;
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while (d[i] && !(d[i] & 1)) {
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cnt[i]++;
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d[i] >>= 1;
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}
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}
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int lst = 1, ans = 0;
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for (int i = 1; i < n - 1; i++) {
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if (d[i] != d[i + 1]) {
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ans += calc(lst, i);
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lst = i + 1;
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}
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}
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ans += calc(lst, n - 1);
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cout << ans + 1 << endl;
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}
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return 0;
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}
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