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Submission #241890

# Submission time Handle Problem Language Result Execution time Memory
241890 2020-06-26T09:06:59 Z NONAME Vještica (COCI16_vjestica) C++14
32 / 160
 205 ms 8824 KB 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ld = long double;

const ll oo = 1e18;

ll n, dp[(1 << 20)], cnt[20][26];

ll calc(ll msk) {
    ll c[26] {};

    for (ll i = 0; i < 26; ++i)
        c[i] = n;

    for (ll i = 0; i < n; ++i)
        if ((1 << i) & msk) {
            for (ll j = 0; j < 26; ++j)
                c[j] = min(c[j], cnt[i][j]);
        }

    ll len = 0;

    for (ll i = 0; i < 26; ++i)
        len += c[i];

    return len;
}

ll solve(ll msk) {
    ll &res = dp[msk];
    if (res != -1)
        return res;

    res = oo;

    ll pr = calc(msk);

    if (__builtin_popcount(msk) == 1)
        return res = pr;

    for (ll i = (msk - 1) & msk; i > 0; i = (i - 1) & msk) {
        ll cur = solve(i) + solve(msk ^ i) - pr;
        res = min(res, cur);
    }

    return res;
}

int main() {
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);

    #ifdef _LOCAL
        freopen("in", "r", stdin);
        freopen("out", "w", stdout);
    #endif // _LOCAL

    memset(dp, -1, sizeof(dp));
    cin >> n;
    for (ll i = 0; i < n; ++i) {
        string s;
        cin >> s;

        ll m = ll(s.size());

        for (ll j = 0; j < m; ++j)
            ++cnt[i][s[j] - 'a'];
    }

    cout << solve((1 << n) - 1) + 1;
}

Subtask #1
32.0 / 160.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 8576 KB Output is correct
2 Correct 9 ms 8576 KB Output is correct
3 Incorrect 9 ms 8576 KB Output isn't correct
4 Incorrect 196 ms 8672 KB Output isn't correct
5 Incorrect 191 ms 8576 KB Output isn't correct
6 Incorrect 193 ms 8576 KB Output isn't correct
7 Incorrect 205 ms 8820 KB Output isn't correct
8 Incorrect 194 ms 8704 KB Output isn't correct
9 Incorrect 196 ms 8816 KB Output isn't correct
10 Incorrect 193 ms 8824 KB Output isn't correct