oj.uz

Submission #1006110

# Submission time Handle Problem Language Result Execution time Memory
1006110 2024-06-23T12:09:53 Z pudelos Paths (BOI18_paths) C++17
0 / 100
 52 ms 6480 KB 
#include <bits/stdc++.h>
using namespace std;
#define FOR(i, a, b) for(int i=a; i<=b; ++i)
#define eb emplace_back
#define ll long long
#define V vector
const int maxn=3e5+7, maxk=5;

ll dp[maxn][1<<maxk];
int n, m, k;
V<int> A;
V<V<int>> con;

int main() {
  cin.tie(0) -> ios_base::sync_with_stdio(0);
  cin >> n >> m >> k;
  A.resize(n+1);
  con.resize(n+1);
  FOR(i, 1, n) {
    cin >> A[i];
    --A[i];
    dp[i][1<<A[i]]=1;
  }
  int a, b;
  FOR(i, 1, m) {
    cin >> a >> b;
    con[a].eb(b);
    con[b].eb(a);
  }

  ll odp=0;
  FOR(m, 1, (1<<k)-1) {
    FOR(v, 1, n) {
      int gr = A[v];
      if(m&(1<<gr)==0) continue;
      if(__builtin_popcount(m)>=2) odp+=dp[v][m];
      for(int u : con[v]) {
        int sgr = A[u];
        if(m&(1<<sgr)!=0) continue;
        dp[u][m^(1<<sgr)]+=dp[v][m];
      }
    }
  }
  cout << odp << '\n';
}

Compilation message

paths.cpp: In function 'int main()':
paths.cpp:35:19: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses]
   35 |       if(m&(1<<gr)==0) continue;
      |            ~~~~~~~^~~
paths.cpp:39:22: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses]
   39 |         if(m&(1<<sgr)!=0) continue;
      |              ~~~~~~~~^~~

Subtask #1
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 52 ms 6480 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 27.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Incorrect 16 ms 1680 KB Output isn't correct
3 Halted 0 ms 0 KB -