oj.uz

Submission #734967

# Submission time Handle Problem Language Result Execution time Memory
734967 2023-05-03T10:22:33 Z bgnbvnbv Vještica (COCI16_vjestica) C++14
128 / 160
 108 ms 1744 KB 
#include<bits/stdc++.h>
#define TASKNAME "codeforce"
#define pb push_back
#define pli pair<int,int>
#define fi first
#define se second
#define fastio ios_base::sync_with_stdio(false); cin.tie(NULL);
using namespace std;
using ll=long long;
const ll maxN=2e5;
const ll inf=1e18;
const ll mod=1e9+7;
ll n;
string s[20];
ll cnt[20][30]={0};
ll dp[1<<16];
void solve()
{
    cin >> n;
    for(int i=0;i<n;i++) cin >> s[i];
    for(int i=0;i<n;i++)
    {
        for(int j=0;j<s[i].size();j++)
        {
            cnt[i][s[i][j]-'a']++;
        }
    }
    for(int i=1;i<(1<<n);i++)
    {
        dp[i]=inf;
        ll mn[26];
        for(int j=0;j<26;j++) mn[j]=1e8;
        for(int j=0;j<n;j++)
        {
            if(i>>j&1)
            {
                for(int k=0;k<26;k++)
                {
                    mn[k]=min(mn[k],cnt[j][k]);
                }
            }
        }
        ll sum=0;
        for(int j=0;j<26;j++)
        {
            sum+=mn[j];
        }
        bool ok=true;
        for(int k=0;k<26;k++)
        {
            ll mask=0;
            for(int j=0;j<n;j++)
            {
                if(i>>j&1)
                {
                    if(cnt[j][k]==mn[k])
                    {
                        mask+=(1<<j);
                    }
                }
            }
            if(mask!=i&&mask!=0)
            {
                ok=false;
                dp[i]=min(dp[i],dp[mask]+dp[i-mask]-sum);
            }
        }
        if(ok) dp[i]=sum;
        //if(i==2) cout <<<<'\n';
    }
    cout << dp[(1<<n)-1]+1;
}
int main()
{
    fastio
    //freopen(TASKNAME".INP","r",stdin);
    //freopen(TASKNAME".OUT","w",stdout);
    solve();
}

Compilation message

vjestica.cpp: In function 'void solve()':
vjestica.cpp:23:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |         for(int j=0;j<s[i].size();j++)
      |                     ~^~~~~~~~~~~~

Subtask #1
128.0 / 160.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 340 KB Output is correct
2 Correct 2 ms 340 KB Output is correct
3 Incorrect 2 ms 340 KB Output isn't correct
4 Incorrect 77 ms 740 KB Output isn't correct
5 Correct 108 ms 900 KB Output is correct
6 Correct 71 ms 1360 KB Output is correct
7 Correct 73 ms 1668 KB Output is correct
8 Correct 69 ms 1740 KB Output is correct
9 Correct 70 ms 1740 KB Output is correct
10 Correct 70 ms 1744 KB Output is correct