제출 #891782

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
891782		vkvkvkvk	Vještica (COCI16_vjestica)	C++14	160 / 160	104 ms	5716 KiB

vjestica

#include <bits/stdc++.h>

#define int long long

#define file(task) if(fopen(task".inp", "r")) { freopen(task".inp", "r", stdin); freopen(task".out", "w", stdout); }
#define FOR(i, a, b) for(int i = (a), _b = (b); i <= _b; ++i)
#define FORD(i, a, b) for(int i = (a), _b = (b); i >= _b; --i)
#define all(X) (X).begin(), (X).end()
#define MASK(X) (1ll << (X))
#define bit(X, i) (((X)>>(i))&1)
#define SZ(X) (int)(X).size()

using namespace std;

const int maxN = 2e3;

struct Trie
{
    int ch[26];
    int exist;

    Trie() { memset(ch, -1, sizeof(ch)); exist = 0; }
} Tr[maxN+5];

int N;
string s[maxN+5];

void read_input()
{
    cin >> N;
    FOR(i, 1, N) cin >> s[i];
}

namespace greedy
{
    int cnt = 1;

    void add(string s)
    {
        int p = 1;
        for(char c : s)
        {
            int x = c - '0';
            if(Tr[p].ch[x] == -1) Tr[p].ch[x] = ++cnt;
            p = Tr[p].ch[x];
        }
        Tr[p].exist = true;
    }

    void solve()
    {
        FOR(i, 1, N)
        {
            sort(all(s[i]));
            add(s[i]);
        }
        cout << cnt;
    }
}

namespace sub
{
    const int Nsub = 18;
    const int maxNsub = MASK(18);
    const int inf = 1e9;

    int f[maxNsub+5], cnt[Nsub+5][30];
    int mn[maxNsub+5];

    void solve()
    {
        memset(f, 0x3f3f3f, sizeof(f));

        FOR(i, 1, N)
        {
            for(char c : s[i]) ++cnt[i][c - 'a'];
            f[MASK(i - 1)] = SZ(s[i]);
        }

        FOR(mask, 1, MASK(N) - 1)
        {
            FOR(c, 0, 25)
            {
                int cur = inf;
                FOR(i, 1, N)
                {
                    if(bit(mask, i - 1)) cur = min(cur, cnt[i][c]);
                }
                 mn[mask] += cur;
            }
        }

        FOR(x, 0, MASK(N) - 1)
        {
            int s = (MASK(N) - 1) ^ x;
            for(int y = s; y; y = (y - 1) & s)
            {
                f[x|y] = min(f[x|y], f[x] + f[y] - mn[x|y]);
            }
        }

        cout << f[MASK(N) - 1] + 1;
    }

}

void solve()
{
    if(N <= 16) sub::solve();
    else greedy::solve();
}

int32_t main()
{
    cin.tie(0)->sync_with_stdio(0);

    file("TRIE");

    read_input();
    solve();

    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

vjestica.cpp: In function 'int32_t main()':
vjestica.cpp:5:56: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    5 | #define file(task) if(fopen(task".inp", "r")) { freopen(task".inp", "r", stdin); freopen(task".out", "w", stdout); }
      |                                                 ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
vjestica.cpp:117:5: note: in expansion of macro 'file'
  117 |     file("TRIE");
      |     ^~~~
vjestica.cpp:5:89: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    5 | #define file(task) if(fopen(task".inp", "r")) { freopen(task".inp", "r", stdin); freopen(task".out", "w", stdout); }
      |                                                                                  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
vjestica.cpp:117:5: note: in expansion of macro 'file'
  117 |     file("TRIE");
      |     ^~~~

• Subtask 1: 160 / 160