oj.uz

Submission #876833

# Submission time Handle Problem Language Result Execution time Memory
876833 2023-11-22T12:06:00 Z vjudge1 Skyscraper (JOI16_skyscraper) C++17
20 / 100
 542 ms 409940 KB 
#include <bits/stdc++.h>

using namespace std;

const long long maxn = 150;
const long long mod = 1e9+7;
long long n,l;
long long x[105];
long long dp[15][(1<<14)][105];

long long f(long long prev,long long mask,long long mx)
{
    if(mask==(1<<n)-1)
    {
        if(mx<=l)
        {
            return 1;
        }
        return 0;
    }
    if(dp[prev][mask][mx]!=-1)return dp[prev][mask][mx]%mod;
    long long rez=0;
    for(long long bit=0;bit<n;bit++)
    {
        if(mask&(1<<bit))
        {

        }
        else
        {
            long long dif=abs(x[bit]-x[prev]);
            long long nmask=mask;
            nmask|=(1<<bit);
            if(mx+dif<=l)
            rez+=f(bit,nmask,mx+dif)%mod;
        }
    }
    return dp[prev][mask][mx]=rez%mod;
}

int main()
{
    ios::sync_with_stdio(false);
    cin>>n>>l;
    memset(dp,-1,sizeof dp);
    for(long long i=0;i<n;i++)
    {
        cin>>x[i];
    }
    if(n<=8)
    {
        sort(x,x+n);
        vector<long long>v;
        for(long long i=0;i<n;i++)
        {
            v.push_back(x[i]);
        }
        long long ans=0;
        do
        {
            long long kol=0LL;
            for(long long i=1LL;i<v.size();i++)
            {
                kol+=abs(v[i]-v[i-1LL]);
            }
            if(kol<=l)
            {
                ans++;
            }
        }while(next_permutation(v.begin(),v.end()));
        cout<<ans<<endl;
        return 0;
    }
    long long ans=0;
    for(long long i=0;i<n;i++)
    {
        long long m=0;
        m|=(1<<i);
        ans+=f(i,m,0)%mod;
        ans%=mod;
    }
    cout<<ans%mod<<endl;
    return 0;
}

Compilation message

skyscraper.cpp: In function 'int main()':
skyscraper.cpp:62:34: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   62 |             for(long long i=1LL;i<v.size();i++)
      |                                 ~^~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 202332 KB Output is correct
2 Correct 24 ms 202332 KB Output is correct
3 Correct 23 ms 202324 KB Output is correct
4 Correct 24 ms 202328 KB Output is correct
5 Correct 24 ms 202320 KB Output is correct
6 Correct 25 ms 202324 KB Output is correct
7 Correct 24 ms 202324 KB Output is correct
8 Correct 23 ms 202428 KB Output is correct
9 Correct 24 ms 202320 KB Output is correct
10 Correct 24 ms 202332 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 71 ms 202328 KB Output is correct
2 Correct 52 ms 202328 KB Output is correct
3 Correct 358 ms 202332 KB Output is correct
4 Correct 49 ms 202332 KB Output is correct
5 Correct 37 ms 202324 KB Output is correct
6 Correct 372 ms 202636 KB Output is correct
7 Correct 41 ms 202324 KB Output is correct
8 Correct 362 ms 202424 KB Output is correct
9 Correct 542 ms 202424 KB Output is correct
10 Correct 54 ms 202332 KB Output is correct

Subtask #3
0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 202332 KB Output is correct
2 Correct 24 ms 202332 KB Output is correct
3 Correct 23 ms 202324 KB Output is correct
4 Correct 24 ms 202328 KB Output is correct
5 Correct 24 ms 202320 KB Output is correct
6 Correct 25 ms 202324 KB Output is correct
7 Correct 24 ms 202324 KB Output is correct
8 Correct 23 ms 202428 KB Output is correct
9 Correct 24 ms 202320 KB Output is correct
10 Correct 24 ms 202332 KB Output is correct
11 Correct 71 ms 202328 KB Output is correct
12 Correct 52 ms 202328 KB Output is correct
13 Correct 358 ms 202332 KB Output is correct
14 Correct 49 ms 202332 KB Output is correct
15 Correct 37 ms 202324 KB Output is correct
16 Correct 372 ms 202636 KB Output is correct
17 Correct 41 ms 202324 KB Output is correct
18 Correct 362 ms 202424 KB Output is correct
19 Correct 542 ms 202424 KB Output is correct
20 Correct 54 ms 202332 KB Output is correct
21 Runtime error 192 ms 409940 KB Execution killed with signal 11
22 Halted 0 ms 0 KB -