oj.uz

Submission #35940

# Submission time Handle Problem Language Result Execution time Memory
35940 2017-12-03T10:30:08 Z funcsr Vještica (COCI16_vjestica) C++14
160 / 160
 153 ms 9288 KB 
#include <cstdio>
#include <iostream>
#include <algorithm>
#include <string>
#include <cstring>
#include <vector>
#include <queue>
#include <set>
#include <map>
#include <cmath>
#include <iomanip>
#include <cassert>
#include <bitset>
using namespace std;

typedef pair<int, int> P;
#define rep(i, n) for (int i=0; i<(n); i++)
#define all(c) (c).begin(), (c).end()
#define uniq(c) c.erase(unique(all(c)), (c).end())
#define index(xs, x) (int)(lower_bound(all(xs), x) - xs.begin())
#define _1 first
#define _2 second
#define pb push_back
#define INF 1145141919
#define MOD 1000000007

int N;
int C[16][26];
int dp[1<<16];
int L[1<<16][26];

signed main() {
  ios::sync_with_stdio(false); cin.tie(0);
  cin >> N;
  rep(i, N) {
    string s;
    cin >> s;
    for (char c : s) C[i][c-'a']++;
  }
  dp[0] = 0;
  for (int S=1; S<(1<<N); S++) {
    int popcount = __builtin_popcount(S);
    rep(j, 26) {
      int m = INF;
      rep(i, N) if ((S>>i)&1) m = min(m, C[i][j]);
      L[S][j] = m;
    }
    int c = 0;
    rep(j, 26) c += L[S][j];
    if (popcount == 1) {
      dp[S] = c;
      continue;
    }
    int m = INF;
    for (int T=(S-1)&S; T>0; T=(T-1)&S) m = min(m, dp[T] + dp[S^T]);
    dp[S] = m - c;
  }
  cout << dp[(1<<N)-1]+1 << "\n";
  return 0;
}

Subtask #1
160.0 / 160.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 9088 KB Output is correct
2 Correct 0 ms 9088 KB Output is correct
3 Correct 0 ms 9088 KB Output is correct
4 Correct 133 ms 9088 KB Output is correct
5 Correct 129 ms 9088 KB Output is correct
6 Correct 153 ms 9088 KB Output is correct
7 Correct 133 ms 9288 KB Output is correct
8 Correct 136 ms 9236 KB Output is correct
9 Correct 136 ms 9260 KB Output is correct
10 Correct 126 ms 9240 KB Output is correct