結果

問題 No.798 コレクション
ユーザー ganariyaganariya
提出日時 2019-03-15 23:10:35
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 23 ms / 2,000 ms
コード長 7,616 bytes
コンパイル時間 1,665 ms
コンパイル使用メモリ 154,260 KB
実行使用メモリ 24,192 KB
最終ジャッジ日時 2024-07-01 21:32:27
合計ジャッジ時間 2,713 ms
ジャッジサーバーID
(参考情報)
judge3 / judge4
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 2 ms
6,816 KB
testcase_01 AC 2 ms
6,944 KB
testcase_02 AC 2 ms
6,944 KB
testcase_03 AC 2 ms
6,940 KB
testcase_04 AC 2 ms
6,940 KB
testcase_05 AC 2 ms
6,944 KB
testcase_06 AC 2 ms
6,940 KB
testcase_07 AC 2 ms
6,940 KB
testcase_08 AC 2 ms
6,940 KB
testcase_09 AC 2 ms
6,940 KB
testcase_10 AC 3 ms
6,944 KB
testcase_11 AC 2 ms
6,944 KB
testcase_12 AC 2 ms
6,940 KB
testcase_13 AC 11 ms
12,416 KB
testcase_14 AC 17 ms
18,176 KB
testcase_15 AC 15 ms
15,872 KB
testcase_16 AC 8 ms
9,216 KB
testcase_17 AC 12 ms
12,928 KB
testcase_18 AC 22 ms
22,912 KB
testcase_19 AC 18 ms
18,944 KB
testcase_20 AC 9 ms
9,216 KB
testcase_21 AC 7 ms
8,576 KB
testcase_22 AC 15 ms
16,000 KB
testcase_23 AC 2 ms
6,940 KB
testcase_24 AC 23 ms
24,192 KB
testcase_25 AC 23 ms
24,192 KB
権限があれば一括ダウンロードができます
コンパイルメッセージ
main.cpp: In function 'int main()':
main.cpp:135:26: warning: 'buy' may be used uninitialized [-Wmaybe-uninitialized]
  135 |         for (LL j = 0; j < buy; j++) {
      |                        ~~^~~~~
main.cpp:117:8: note: 'buy' was declared here
  117 |     LL buy;
      |        ^~~

ソースコード

diff #

//
//
//  Codeforces: ganariya
//  AtCoder: ganariya2525
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//include
//------------------------------------------
#include <vector>
#include <list>
#include <map>
#include <unordered_map>
#include <climits>
#include <set>
#include <unordered_set>
#include <deque>
#include <stack>
#include <bitset>
#include <algorithm>
#include <functional>
#include <numeric>
#include <utility>
#include <sstream>
#include <iostream>
#include <iomanip>
#include <cstdio>
#include <cmath>
#include <cstdlib>
#include <cctype>
#include <string>
#include <cstring>
#include <ctime>
#include <queue>
#include <random>
#include <complex>
#include <regex>
#include <locale>
#include <random>
#include <type_traits>

using namespace std;

#define SHOW_VECTOR(v) {std::cerr << #v << "\t:";for(const auto& xxx : v){std::cerr << xxx << " ";}std::cerr << "\n";}
#define SHOW_MAP(v){std::cerr << #v << endl; for(const auto& xxx: v){std::cerr << xxx.first << " " << xxx.second << "\n";}}

using LL = long long;

//~~~~~~~~~~~~~~~~~~~~~_(^~^ 」 ∠)_~~~~~~~~~~~~~~~~~~~~~

constexpr LL INF = 1e14;

int main() {

    int N;
    cin >> N;

    vector<LL> A(N), B(N);
    for (int i = 0; i < N; i++) cin >> A[i] >> B[i];

    vector<pair<LL, LL>> BA(N);
    for (int i = 0; i < N; i++) BA[i] = make_pair(B[i], A[i]);

    sort(BA.rbegin(), BA.rend());

    LL buy;

    if (N % 3 == 0) {
        buy = N - N / 3;
    }
    if (N % 3 == 1) {
        buy = N - N / 3;
    }
    if (N % 3 == 2) {
        buy = (N + 1) - (N + 1) / 3;
    }

    //dp[i][j]
    //[0, i)番目の品物まででj個買うときの最小の金額
    vector<vector<LL>> dp(N + 1, vector<LL>(buy + 1, INF));
    dp[0][0] = 0;

    for (LL i = 0; i < N; i++) {
        for (LL j = 0; j < buy; j++) {
            //買うならば
            dp[i + 1][j + 1] = min(dp[i + 1][j + 1], dp[i][j] + BA[i].second + j * BA[i].first);

            //買わないならば
            dp[i + 1][j] = min(dp[i + 1][j], dp[i][j]);
        }
    }

    LL ans = INF;
    for (int i = 0; i <= N; i++) ans = min(ans, dp[i][buy]);

    cout << ans << endl;

    return 0;
}














































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