Submission #1231441


Source Code Expand

#include <algorithm>
#include <cmath>
#include <iostream>
#include <map>
#include <queue>
#include <set>
#include <string>
#include <vector>
#define rep(i, n) for (lli i = 0; i < (n); i++)
#define rrep(i, n) for (lli i = (n)-1; i >= 0; i--)
using namespace std;
using lli = long long int;
lli MOD = 1e9 + 7;
int main()
{
    //つまり考えるべきことはi以外でもっともSに近いものを作るてその総和+a_iがKを超えれば不必要ではない
    //これはk>=a_i + S つまり(k-a_i)<=s&&s<kなるsの存在判定
    //iで毎回dpすればn^2kで部分点
    lli n, k;

    lli a[100005];
    cin >> n >> k;
    rep(i, n) cin >> a[i];
    if (n > 500)
        return 0;
    int cnt = 0;
    int u = n;
    int l = 0;
    while (u - l > 1) {
        int i = (u + l) / 2;
        bool dp[410][510] = {};
        dp[0][0] = true;
        rep(j, n) rep(l, k)
        {
            if (dp[j][l])
                dp[j + 1][l] = true;
            if (i == j)
                continue;
            if (dp[j][l] && a[j] + l < k) {
                dp[j + 1][a[j] + l] = true;
            }
        }
        rrep(l, k)
        {
            if (dp[n][l]) {
                if (l + a[i] >= k) {
                    u = i;
                    break;
                }
            }
        }
        l = i;
    }
    cout << u << endl;
}

Submission Info

Submission Time
Task C - Go Home
User uenoku
Language C++14 (GCC 5.4.1)
Score 0
Code Size 1410 Byte
Status WA
Exec Time 2103 ms
Memory 512 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 0 / 200
Status
AC × 1
WA × 2
AC × 2
WA × 2
TLE × 14
Set Name Test Cases
Sample 0_000.txt, 0_001.txt, 0_002.txt
All 0_000.txt, 0_001.txt, 0_002.txt, 1_003.txt, 1_004.txt, 1_005.txt, 1_006.txt, 1_007.txt, 1_008.txt, 1_009.txt, 1_010.txt, 1_011.txt, 1_012.txt, 1_013.txt, 1_014.txt, 1_015.txt, 1_016.txt, 1_017.txt
Case Name Status Exec Time Memory
0_000.txt WA 1 ms 512 KB
0_001.txt AC 1 ms 512 KB
0_002.txt WA 1 ms 512 KB
1_003.txt TLE 2103 ms 256 KB
1_004.txt TLE 2103 ms 256 KB
1_005.txt AC 1 ms 256 KB
1_006.txt TLE 2103 ms 256 KB
1_007.txt TLE 2103 ms 256 KB
1_008.txt TLE 2103 ms 256 KB
1_009.txt TLE 2103 ms 256 KB
1_010.txt TLE 2103 ms 256 KB
1_011.txt TLE 2103 ms 256 KB
1_012.txt TLE 2103 ms 256 KB
1_013.txt TLE 2103 ms 256 KB
1_014.txt TLE 2103 ms 256 KB
1_015.txt TLE 2103 ms 256 KB
1_016.txt TLE 2103 ms 256 KB
1_017.txt TLE 2103 ms 256 KB