Submission #479439

#	Time	Username	Problem	Language	Result	Execution time	Memory
479439		Habitus	Vještica (COCI16_vjestica)	C++14	0 / 160	2099 ms	332 KiB

vjestica

#include<bits/stdc++.h>
#define ios ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0)
#define dec(x, y) fixed << setprecision((y)) << (x)
#define xx first
#define yy second
#define srt(v) sort((v).begin(), (v).end())
#define srtr(v) sort((v).rbegin(), (v).rend())
#define pb push_back
#define popb pop_back
#define sz(a) (int)(a).size()
#define len(a) (int)(a).length()
#define mp make_pair

using namespace std;

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

int n;
int s[16][26];
ll dp(int mask) {
    for(int i=0; i<n; ++i) {
        if(((1<<i)^mask)==0) {
            ll duz=0LL;
            for(int j=0; j<26; ++j) duz+=s[i][j];
            return duz;
        }
        if((1<<i)&mask) break;
    }
    int p[26];
    for(int i=0; i<26; ++i) p[i]=2000000;
    for(int i=0; i<n; ++i) {
        if((1<<i)&mask) {
            for(int j=0; j<26; ++j) {
                p[j]=min(p[j], s[i][j]);
            }
        }
    }
    ll duz=0LL;
    for(int i=0; i<26; ++i) duz+=(ll)p[i];
    ll mini=2000000000000000LL;
    for(int sub=(mask-1)&mask; sub>0; sub=(sub-1)&mask) {
        if(__builtin_popcount(sub)<__builtin_popcount(mask^sub)) continue;
        mini=min(mini, dp(sub)+dp(mask^sub));
    }
    return mini-duz;
}
int main() {
    ios;
    cin >> n;
    for(int i=0; i<n; ++i) {
        string t; cin >> t;
        for(int j=0; j<len(t); ++j) {
            ++s[i][t[j]-'a'];
        }
    }
    cout << dp((1<<n)-1)+1LL;
    return 0;
}

• Subtask 1: 0 / 160