Submission #1211005

#TimeUsernameProblemLanguageResultExecution timeMemory
1211005abczzRotating Lines (APIO25_rotate)C++20
5 / 100
56 ms4656 KiB
#include "rotate.h" #include <vector> #include <iostream> #include <deque> #include <array> #include <algorithm> #define ll long long using namespace std; void energy(int n, std::vector<int> v){ ll u = v[0]; deque <ll> dq[2]; vector <int> Q; for (int i=0; i<n; ++i) { Q.push_back(i); (v[i] += (50000-u)) %= 50000; } rotate(Q, 50000-u); vector <array<ll, 2>> V; for (int i=1; i<n; ++i) { V.push_back({v[i], i}); } sort(V.begin(), V.end()); ll a[2] = {1, 0}; for (auto [x, y] : V) { if (x == 0 && a[0] < (n+1)/2) ++a[0]; else if (x == 25000 && a[1] < (n+1)/2) ++a[1]; else if (x <= 25000) dq[0].push_back(y); else dq[1].push_back(y); } ll z = 25000; if (a[0] < a[1]) { z = 0, swap(dq[0], dq[1]); swap(a[0], a[1]); } while (!dq[0].empty() || !dq[1].empty()) { if (dq[0].size() >= dq[1].size()) { auto u = dq[0].back(); dq[0].pop_back(); if (v[u] != z) rotate({(int)u}, (50000+z-v[u]) % 50000); } else { auto u = dq[1].front(); dq[1].pop_front(); if (v[u] != z) rotate({(int)u}, (50000+z-v[u]) % 50000); } ++a[1]; if (a[0] <= a[1]) { z ^= 25000; swap(dq[0], dq[1]); swap(a[0], a[1]); } } }
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