Submission #737114

#TimeUsernameProblemLanguageResultExecution timeMemory
737114mjhmjh1104Speedrun (RMI21_speedrun)C++17
8 / 100
292 ms728 KiB
#include "speedrun.h" #include <cstdio> #include <vector> using namespace std; int n, center; vector<int> adj[1006]; bool visited[1006]; void assign(int x, int y, int z) { for (int i = 0; i < 10; i++) setHint(x + 1, y * 10 + i + 1, z & 1 << i ? true : false); } int get(int y) { int ret = 0; for (int i = 0; i < 10; i++) ret |= getHint(y * 10 + i + 1) << i; return ret; } void move(int x) { visited[x] = true; goTo(x + 1); } // void _dfs(int x, int prev = -1) { // int pv = -1; // for (auto &i: adj[x]) if (i != prev) { // if (pv == -1) assign(x, 0, i); // else assign(pv, 1, i); // pv = i; // _dfs(i, x); // } // if (pv == -1) assign(x, 0, 1023); // else assign(pv, 1, x); // } void assignHints(int subtask, int n, int a[], int b[]) { ::n = n; for (int i = 1; i < n; i++) { adj[a[i] - 1].push_back(b[i] - 1); adj[b[i] - 1].push_back(a[i] - 1); } setHintLen(20); if (n == 1) return; for (int i = 0; i < n; i++) if ((int)adj[i].size() != 1) center = i; for (int i = 0; i < n; i++) assign(i, 0, center); assign(center, 1, adj[center][0]); for (int i = 0; i < (int)adj[center].size(); i++) assign(adj[center][i], 1, adj[center][(i + 1) % (int)adj[center].size()]); // _dfs(0); } // void dfs(int x, int prev = -1) { // visited[x] = true; // int child = get(0); // if (child != 1023 && !visited[child]) { // goTo(child + 1); // dfs(child); // goTo(x + 1); // } // int nx = get(1); // if (nx != 1023 && !visited[nx]) { // goTo(nx + 1); // dfs(nx); // goTo(x + 1); // } // } bool notVisited() { for (int i = 0; i < n; i++) if (!visited[i]) return true; return false; } void speedrun(int subtask, int n, int st) { ::n = n; if (n == 1) return; st--; visited[st] = true; while (notVisited()) { int a = get(0), b = get(1); if (visited[b]) move(a); else move(a), move(b); } }
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