Submission #1165819

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1165819	2025-03-12 15:35:50	fryingduc	The Xana coup (BOI21_xanadu)	C++20	0 / 100	51 ms	15432 KiB

xanadu

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#include "bits/stdc++.h"
using namespace std;
#ifdef duc_debug
#include "bits/debug.h"
#else
#define debug(...)
#endif
const int maxn = 1e5 + 5;
int n, a[maxn];
int f[maxn][2][2];
vector<int> g[maxn];
int ff[2][2];
void dfs(int u, int prev) {
  f[u][a[u]][0] = 0;
  f[u][a[u] ^ 1][1] = 1;
  for (auto v : g[u]) {
    if (v == prev) continue;
    dfs(v, u);
    memset(ff, 0x3f, sizeof(ff));
    for (int i = 0; i < 2; ++i) {
      ff[i][0] = min(ff[i][0], f[u][i ^ 1][0] + f[v][0][1]);
      ff[i][0] = min(ff[i][0], f[u][i][0] + f[v][0][0]);
      ff[i][1] = min(ff[i][1], f[u][i][1] + f[v][1][0]);
      ff[i][1] = min(ff[i][1], f[u][i ^ 1][1] + f[v][1][1]);
    }
    for (int i = 0; i < 2; ++i) {
 
 
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• Subtask 1: 0 / 5
• Subtask 2: 0 / 15
• Subtask 3: 0 / 10
• Subtask 4: 0 / 40
• Subtask 5: 0 / 30