oj.uz

Submission #877950

# Submission time Handle Problem Language Result Execution time Memory
877950 2023-11-23T22:29:23 Z Ice_man Skyscraper (JOI16_skyscraper) C++14
20 / 100
 285 ms 473528 KB 
#include <iostream>
#include <chrono>
#include <algorithm>

#define maxn 15
#define maxdiff 1005
#define maxlog 20
#define INF 1000000010
#define LINF 1000000000000000005
#define mod 1000000007
#define endl '\n'
#define pb(x) push_back(x)
#define X first
#define Y second
#define control cout<<"passed"<<endl;

#pragma GCC optimize("O3" , "Ofast" , "fast-math" , "unroll-loops")
#pragma GCC target(avx2)

using namespace std;

std::chrono::high_resolution_clock::time_point startT, currT;
constexpr double TIME_MULT = 1;

double timePassed()
{
    using namespace std::chrono;
    currT = high_resolution_clock::now();
    double time = duration_cast<duration<double>>(currT - startT).count();
    return time * TIME_MULT;
}

int dp[(1 << maxn)][maxn][maxdiff];
int val[maxn];
///maxdiff!!!

int n , max_sum;

void read()
{
    cin >> n >> max_sum;
    for(int i = 1; i <= n; i++) cin >> val[i];
}

int ans = 0;

void subtask1()
{
    sort(val + 1 , val + 1 + n);
    int cur_sum = 0;
    do
    {
        cur_sum = 0;

        for(int i = 2; i <= n; i++) cur_sum += abs(val[i - 1] - val[i]);

        if(cur_sum <= max_sum) ans++;

    }while(next_permutation(val + 1 , val + 1 + n));

    cout << ans << endl;

}

void subtask2()
{

    dp[0][0][0] = 1;

    for(int mask = 0; mask < (1 << n) - 1; mask++)
    {
        for(int i = 0; i <= n; i++)
        {
            for(int j = 0; j <= max_sum; j++)
            {
                if(dp[mask][i][j])
                {

                    for(int k = 1; k <= n; k++)
                    {
                        if(!(mask & (1 << (k - 1))))
                        {

                            int new_mask = (mask | (1 << (k - 1)));

                            int pom;
                            if(mask == 0) pom = 0;
                            else pom = j + abs(val[i] - val[k]);

                            dp[new_mask][k][pom] = (dp[new_mask][k][pom] + dp[mask][i][j]) % mod;


                        }
                    }

                }
            }
        }
    }


    for(int i = 1; i <= n; i++)
        for(int j = 0; j <= max_sum; j++)
        ans = (ans + dp[(1 << n) - 1][i][j]) % mod;

    cout << ans << endl;

}

int main()
{

#ifdef ONLINE_JUDGE
    freopen("taxi.in", "r", stdin);
    freopen("taxi.out", "w", stdout);
#endif

    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    startT = std::chrono::high_resolution_clock::now();

    read();

    if(n <= 8) subtask1();
    else subtask2();

    return 0;
}

Compilation message

skyscraper.cpp:18:20: warning: '#pragma GCC option' is not a string [-Wpragmas]
   18 | #pragma GCC target(avx2)
      |                    ^~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 51 ms 99160 KB Output is correct
2 Correct 205 ms 472284 KB Output is correct
3 Correct 285 ms 464040 KB Output is correct
4 Correct 203 ms 471124 KB Output is correct
5 Correct 203 ms 473428 KB Output is correct
6 Correct 275 ms 473528 KB Output is correct
7 Correct 188 ms 461648 KB Output is correct
8 Correct 248 ms 464004 KB Output is correct
9 Correct 281 ms 466256 KB Output is correct
10 Correct 202 ms 470352 KB Output is correct

Subtask #3
0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 51 ms 99160 KB Output is correct
12 Correct 205 ms 472284 KB Output is correct
13 Correct 285 ms 464040 KB Output is correct
14 Correct 203 ms 471124 KB Output is correct
15 Correct 203 ms 473428 KB Output is correct
16 Correct 275 ms 473528 KB Output is correct
17 Correct 188 ms 461648 KB Output is correct
18 Correct 248 ms 464004 KB Output is correct
19 Correct 281 ms 466256 KB Output is correct
20 Correct 202 ms 470352 KB Output is correct
21 Runtime error 19 ms 600 KB Execution killed with signal 11
22 Halted 0 ms 0 KB -