Submission #787488

#TimeUsernameProblemLanguageResultExecution timeMemory
787488eltu0815Flights (JOI22_flights)C++17
15 / 100
366 ms540672 KiB
#include "Ali.h" #include <bits/stdc++.h> using namespace std; namespace { int n; int dep[10005], parent[10005][14]; vector<int> tree[10005]; } int LCA(int u, int v) { if(dep[u] < dep[v]) swap(u, v); int diff = dep[u] - dep[v], j = 0; while(diff) { if(diff & 1) u = parent[u][j]; diff >>= 1; ++j; } if(u == v) return u; for(int i = 13; i >= 0; --i) { if(parent[u][i] != parent[v][i]) { u = parent[u][i]; v = parent[v][i]; } } return parent[u][0]; } void dfs(int node, int par) { dep[node] = dep[par] + 1; parent[node][0] = par; for(auto v : tree[node]) { if(v == par) continue; dfs(v, node); } } void Init(int N, std::vector<int> U, std::vector<int> V) { n = N; for(int i = 0; i < n - 1; ++i) { tree[U[i]].push_back(V[i]); tree[V[i]].push_back(U[i]); } dfs(0, 0); for(int j = 1; j <= 13; ++j) for(int i = 0; i < n; ++i) parent[i][j] = parent[parent[i][j - 1]][j - 1]; for(int i = 0; i < n; ++i) SetID(i, i); } std::string SendA(std::string S) { int x = 0, y = 0; for(int i = 0; i <= 13; ++i) x |= (S[i] - '0') << i; for(int i = 14; i < 20; ++i) y |= (S[i] - '0') << (i - 14); string ret; for(int i = 0; i < (1 << 8); ++i) { int ny = ((i << 6) | y); if(ny >= n) continue; int dist = dep[x] + dep[ny] - 2 * dep[LCA(x, ny)]; for(int j = 0, t = 1; j <= 13; ++j, t <<= 1) { if(dist & t) ret.push_back('1'); else ret.push_back('0'); } } return ret; }
#include "Benjamin.h" #include <string> #include <vector> using namespace std; namespace { int n; int x, y; int y6; } std::string SendB(int N, int X, int Y) { n = N; x = X; y = Y; string ret; for(int i = 0, t = 1; i <= 13; ++i, t <<= 1) { if(X & t) ret += '1'; else ret += '0'; } for(int i = 0, t = 1; i <= 5; ++i, t <<= 1) { if(Y & t) ret += '1'; else ret += '0'; } y6 = y & ((1 << 6) - 1); return ret; } int Answer(std::string T) { int idx = 0; for(int i = 0; i < (1 << 8); ++i) { int ny = ((i << 6) | y6); if(ny >= n) continue; if(ny != y) idx += 14; else { int ret = 0; for(int j = 0; j <= 13; ++j) ret |= (T[idx + j] - '0') << j; return ret; } } return 0; }

Compilation message (stderr)

grader_ali.cpp:10:8: warning: '{anonymous}::_randmem' defined but not used [-Wunused-variable]
   10 |   char _randmem[12379];
      |        ^~~~~~~~
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