Submission #854951


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#include <iostream>
#include <iomanip>
#include <algorithm>
#include <string>
#include <vector>
#include <map>
#include <set>
#include <cstdio>
#include <cstring>
using namespace std;

int n, a;
vector<int> xs;

int64_t tbl[51][5000];

int64_t solve(int cur, int diff)
{
    if (cur == n) {
        return diff == 0 ? 1 : 0;
    }

    int64_t &ret = tbl[cur][diff + 2500];
    if (ret >= 0) return ret;

    ret = 0;
    ret += solve(cur + 1, diff + a - xs[cur]);
    ret += solve(cur + 1, diff);

    return ret;
}

int main()
{
    cin >> n >> a;

    xs.resize(n);
    for (auto &x: xs) cin >> x;

    memset(tbl, -1, sizeof(tbl));

    cout << solve(0, 0) - 1 << endl;

    return 0;
}

Submission Info

Submission Time
Task C - Tak and Cards
User tanakh
Language C++14 (GCC 5.4.1)
Score 300
Code Size 734 Byte
Status AC
Exec Time 8 ms
Memory 2176 KB

Judge Result

Set Name Sample Subtask1 All
Score / Max Score 0 / 0 200 / 200 100 / 100
Status
AC × 4
AC × 12
AC × 24
Set Name Test Cases
Sample example_01.txt, example_02.txt, example_03.txt, example_04.txt
Subtask1 example_01.txt, example_02.txt, example_03.txt, subtask1_01.txt, subtask1_02.txt, subtask1_03.txt, subtask1_04.txt, subtask1_05.txt, subtask1_06.txt, subtask1_07.txt, subtask1_08.txt, subtask1_09.txt
All example_01.txt, example_02.txt, example_03.txt, example_04.txt, subtask1_01.txt, subtask1_02.txt, subtask1_03.txt, subtask1_04.txt, subtask1_05.txt, subtask1_06.txt, subtask1_07.txt, subtask1_08.txt, subtask1_09.txt, subtask2_01.txt, subtask2_02.txt, subtask2_03.txt, subtask2_04.txt, subtask2_05.txt, subtask2_06.txt, subtask2_07.txt, subtask2_08.txt, subtask2_09.txt, subtask2_10.txt, subtask2_11.txt
Case Name Status Exec Time Memory
example_01.txt AC 7 ms 2176 KB
example_02.txt AC 7 ms 2176 KB
example_03.txt AC 7 ms 2176 KB
example_04.txt AC 7 ms 2176 KB
subtask1_01.txt AC 7 ms 2176 KB
subtask1_02.txt AC 7 ms 2176 KB
subtask1_03.txt AC 7 ms 2176 KB
subtask1_04.txt AC 8 ms 2176 KB
subtask1_05.txt AC 7 ms 2176 KB
subtask1_06.txt AC 7 ms 2176 KB
subtask1_07.txt AC 7 ms 2176 KB
subtask1_08.txt AC 7 ms 2176 KB
subtask1_09.txt AC 7 ms 2176 KB
subtask2_01.txt AC 7 ms 2176 KB
subtask2_02.txt AC 8 ms 2176 KB
subtask2_03.txt AC 8 ms 2176 KB
subtask2_04.txt AC 7 ms 2176 KB
subtask2_05.txt AC 7 ms 2176 KB
subtask2_06.txt AC 7 ms 2176 KB
subtask2_07.txt AC 7 ms 2176 KB
subtask2_08.txt AC 7 ms 2176 KB
subtask2_09.txt AC 7 ms 2176 KB
subtask2_10.txt AC 7 ms 2176 KB
subtask2_11.txt AC 7 ms 2176 KB