結果

問題 No.1606 Stuffed Animals Keeper
ユーザー fastmathfastmath
提出日時 2021-07-16 22:21:27
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 91 ms / 3,000 ms
コード長 3,635 bytes
コンパイル時間 1,449 ms
コンパイル使用メモリ 139,052 KB
実行使用メモリ 199,764 KB
最終ジャッジ日時 2024-07-06 09:45:23
合計ジャッジ時間 5,364 ms
ジャッジサーバーID
(参考情報)
judge4 / judge3
このコードへのチャレンジ
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テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 53 ms
199,288 KB
testcase_01 AC 53 ms
199,212 KB
testcase_02 AC 52 ms
199,088 KB
testcase_03 AC 65 ms
199,288 KB
testcase_04 AC 67 ms
199,328 KB
testcase_05 AC 58 ms
199,284 KB
testcase_06 AC 60 ms
199,448 KB
testcase_07 AC 62 ms
199,432 KB
testcase_08 AC 62 ms
199,480 KB
testcase_09 AC 58 ms
199,248 KB
testcase_10 AC 56 ms
199,468 KB
testcase_11 AC 57 ms
199,176 KB
testcase_12 AC 60 ms
199,304 KB
testcase_13 AC 51 ms
199,376 KB
testcase_14 AC 53 ms
199,212 KB
testcase_15 AC 91 ms
199,764 KB
testcase_16 AC 68 ms
199,172 KB
testcase_17 AC 68 ms
199,332 KB
testcase_18 AC 69 ms
199,424 KB
testcase_19 AC 68 ms
199,352 KB
testcase_20 AC 68 ms
199,360 KB
testcase_21 AC 53 ms
199,252 KB
testcase_22 AC 55 ms
199,340 KB
testcase_23 AC 52 ms
199,368 KB
testcase_24 AC 53 ms
199,260 KB
testcase_25 AC 53 ms
199,316 KB
testcase_26 AC 54 ms
199,320 KB
testcase_27 AC 53 ms
199,352 KB
testcase_28 AC 52 ms
199,276 KB
testcase_29 AC 53 ms
199,264 KB
testcase_30 AC 52 ms
199,320 KB
testcase_31 AC 55 ms
199,260 KB
testcase_32 AC 54 ms
199,436 KB
testcase_33 AC 51 ms
199,352 KB
testcase_34 AC 53 ms
199,252 KB
testcase_35 AC 51 ms
199,336 KB
testcase_36 AC 52 ms
199,356 KB
testcase_37 AC 54 ms
199,232 KB
testcase_38 AC 52 ms
199,396 KB
testcase_39 AC 51 ms
199,372 KB
testcase_40 AC 51 ms
199,308 KB
testcase_41 AC 52 ms
199,192 KB
testcase_42 AC 51 ms
199,280 KB
testcase_43 AC 67 ms
199,420 KB
testcase_44 AC 67 ms
199,204 KB
testcase_45 AC 68 ms
199,424 KB
testcase_46 AC 65 ms
199,312 KB
testcase_47 AC 65 ms
199,448 KB
testcase_48 AC 51 ms
199,116 KB
testcase_49 AC 51 ms
199,388 KB
testcase_50 AC 51 ms
199,244 KB
権限があれば一括ダウンロードができます

ソースコード

diff #

#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <algorithm>
#include <cmath>
#include <vector>
#include <set>
#include <map>
#include <unordered_set>
#include <unordered_map>
#include <queue>
#include <ctime>
#include <cassert>
#include <complex>
#include <string>
#include <cstring>
#include <chrono>
#include <random>
#include <bitset>
#include <fstream>
#include <array>
using namespace std;
#define int long long
#define ii pair <int, int>
#define app push_back
#define all(a) a.begin(), a.end()
#define bp __builtin_popcountll
#define ll long long
#define mp make_pair
#define x first
#define y second
#define Time (double)clock()/CLOCKS_PER_SEC
#define debug(x) std::cerr << #x << ": " << x << '\n';

#define FORI(i,a,b) for (int i = (a); i < (b); ++i)
#define FOR(i,a) FORI(i,0,a)
#define ROFI(i,a,b) for (int i = (b)-1; i >= (a); --i)
#define ROF(i,a) ROFI(i,0,a)
#define rep(a) FOR(_,a)
#define each(a,x) for (auto& a: x)
#define FORN(i, n) FORI(i, 1, n + 1)

using vi = vector<int>;
template <typename T>
std::istream& operator >>(std::istream& input, std::pair <T, T> & data)
{
    input >> data.x >> data.y;
    return input;
}
template <typename T>
std::istream& operator >>(std::istream& input, std::vector<T>& data)
{
    for (T& x : data)
        input >> x;
    return input;
}
template <typename T>
std::ostream& operator <<(std::ostream& output, const pair <T, T> & data)
{
    output << "(" << data.x << "," << data.y << ")";
    return output;
}
template <typename T>
std::ostream& operator <<(std::ostream& output, const std::vector<T>& data)
{
    for (const T& x : data)
        output << x << " ";
    return output;
}
std::ostream& operator <<(std::ostream& output, const __int128 &x)
{
    __int128 n = x;
    if (n == 0) {
        output << "0";
        return output;
    }
    if (n < 0) {
        n = -n;
        output << "-";
    }
    string s;
    while (n) {
        s += '0' + (n%10);
        n /= 10;
    }
    reverse(all(s));
    cout << s;
    return output;
}
ll div_up(ll a, ll b) { return a/b+((a^b)>0&&a%b); } // divide a by b rounded up
ll div_down(ll a, ll b) { return a/b-((a^b)<0&&a%b); } // divide a by b rounded down 
ll math_mod(ll a, ll b) { return a - b * div_down(a, b); }
#define tcT template<class T
#define tcTU tcT, class U
tcT> using V = vector<T>; 
tcT> bool ckmin(T& a, const T& b) {
    return b < a ? a = b, 1 : 0; 
} // set a = min(a,b)
tcT> bool ckmax(T& a, const T& b) {
    return a < b ? a = b, 1 : 0; 
}
ll gcd(ll a, ll b) {
    while (b) {
        tie(a, b) = mp(b, a % b);
    }
    return a;
}
int Bit(int mask, int bit) { return (mask >> bit) & 1; }

const int N = 5007, INF = 1e18;
int dp[N][N];

signed main() {
    #ifdef LOCAL
    #else
    #define endl '\n'
    ios_base::sync_with_stdio(0); cin.tie(0);
    #endif
    int n;
    cin >> n;
    vi a(n);
    cin >> a;

    int c = 0;
    each (e, a) {
        c += e == 1;
    }

    V <vi> seg;
    vi cur(2);
    FOR (i, n) {
        if (a[i] == 2) {
            seg.app(cur);
            cur[0] = cur[1] = 0;
        }
        else {
            cur[a[i]]++;
        }
    }
    seg.app(cur);

    FOR (i, N) {
        FOR (j, N) {
            dp[i][j] = INF;
        }
    }

    dp[0][0] = 0;
    int sz = seg.size();
    FOR (i, sz) {
        FOR (j, N) {
            if (dp[i][j] != INF) {

                ckmin(dp[i + 1][j], dp[i][j] + seg[i][1]);
                ckmin(dp[i + 1][j + seg[i][0] + seg[i][1]], dp[i][j] + seg[i][0]);

            }
        }
    }

    if (dp[sz][c] != INF) {
        cout << dp[sz][c]/2 << endl;
    }
    else {
        cout << -1 << endl;
    }
}
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