結果

問題 No.801 エレベーター
ユーザー ganariyaganariya
提出日時 2019-03-17 22:56:27
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
TLE  
実行時間 -
コード長 9,123 bytes
コンパイル時間 1,894 ms
コンパイル使用メモリ 160,388 KB
実行使用メモリ 10,624 KB
最終ジャッジ日時 2024-07-08 01:29:26
合計ジャッジ時間 5,598 ms
ジャッジサーバーID
(参考情報)
judge1 / judge5
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
10,624 KB
testcase_01 AC 1 ms
5,376 KB
testcase_02 AC 1 ms
5,376 KB
testcase_03 AC 50 ms
5,376 KB
testcase_04 AC 51 ms
5,376 KB
testcase_05 AC 52 ms
5,376 KB
testcase_06 AC 51 ms
5,376 KB
testcase_07 AC 52 ms
5,376 KB
testcase_08 AC 52 ms
5,376 KB
testcase_09 AC 49 ms
5,376 KB
testcase_10 AC 51 ms
5,376 KB
testcase_11 AC 50 ms
5,376 KB
testcase_12 AC 51 ms
5,376 KB
testcase_13 TLE -
testcase_14 -- -
testcase_15 -- -
testcase_16 -- -
testcase_17 -- -
testcase_18 -- -
testcase_19 -- -
testcase_20 -- -
testcase_21 -- -
testcase_22 -- -
testcase_23 -- -
testcase_24 -- -
testcase_25 -- -
testcase_26 -- -
testcase_27 -- -
testcase_28 -- -
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 #

//
//
//  Codeforces: ganariya
//  AtCoder: ganariya2525
//  MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM
//  MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM
//  MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM
//  MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMHBYYYWMMMM#BYYTTTYWMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM
//  MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMB9O1==?????zzCC111>>;;;;;;;;;;;<?TMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM
//  MMMMMMMMMMMMMMMMMMMMMMMMMMMMMM9Olll=l======??????????>>>>>>;;;;;;;;;:;?TMMMMMMMMMMMMMMMMMMMMMMMMMMMM
//  MMMMMMMMMMMMMMMMMMMMMMMMMMM9ttlllllllll=l=======?????????>>>>>>;;;;;;;;;;?TMMMMMMMMMMMMMMMMMMMMMMMMM
//  MMMMMMMMMMMMMMMMMMMMMMMMBOttOtttttltlllllllll=======??????????>>>>>>>;;;;;;?TMMMMMMMMMMMMMMMMMMMMMMM
//  MMMMMMMMMMMMMMMMMMMMMMBttwOtttttttttttttlllllllll========?????????>>>>>>;;;;;<TMMMMMMMMMMMMMMMMMMMMM
//  MMMMMMMMMMMMMMMMMMMMBrwZrttttttttttttttttttlllllllllll======???????????>>>>>>;;?HMMMMMMMMMMMMMMMMMMM
//  MMMMMMMMMMMMMMMMMMMSw0trtrrtrtrttrtttttttttttttlllOllllll========????<<zz??>>>>>>ZMMMMMMMMMMMMMMMMMM
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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 mod = 1e9 + 7;

struct LazySegmentTree {
private:
    LL n;
    vector<LL> node, lazy;

public:
    LazySegmentTree(vector<LL> v) {
        LL sz = (LL) v.size();
        n = 1;
        while (n < sz) n *= 2;
        node.resize(2 * n - 1);
        lazy.resize(2 * n - 1, 0);

        for (LL i = 0; i < sz; i++) node[i + n - 1] = v[i];
        for (LL i = n - 2; i >= 0; i--) node[i] = (node[i * 2 + 1] + node[i * 2 + 2]) % mod;
    }

    void eval(LL k, LL l, LL r) {
        if (lazy[k] != 0) {
            node[k] += lazy[k];
            node[k] %= mod;
            if (r - l > 1) {
                lazy[2 * k + 1] += lazy[k] / 2;
                lazy[2 * k + 2] += lazy[k] / 2;
            }
            lazy[k] = 0;
        }
    }

    void add(LL a, LL b, LL x, LL k = 0, LL l = 0, LL r = -1) {
        if (r < 0) r = n;
        eval(k, l, r);
        if (b <= l || r <= a) return;
        if (a <= l && r <= b) {
            lazy[k] += (r - l) * x;
            eval(k, l, r);
        } else {
            add(a, b, x, 2 * k + 1, l, (l + r) / 2);
            add(a, b, x, 2 * k + 2, (l + r) / 2, r);
            node[k] = node[2 * k + 1] + node[2 * k + 2];
            node[k] %= mod;
        }
    }

    LL getsum(LL a, LL b, LL k = 0, LL l = 0, LL r = -1) {
        if (r < 0) r = n;
        eval(k, l, r);
        if (b <= l || r <= a) return 0;
        if (a <= l && r <= b) return node[k] % mod;
        LL vl = getsum(a, b, 2 * k + 1, l, (l + r) / 2);
        LL vr = getsum(a, b, 2 * k + 2, (l + r) / 2, r);
        return (vl + vr) % mod;
    }

    void reset() {
        int sz = node.size();
        for (int i = 0; i < sz; i++) {
            node[i] = lazy[i] = 0;
        }
    }
};

int main() {

    int N, M, K;
    cin >> N >> M >> K;

    vector<int> L(M), R(M);
    for (int i = 0; i < M; i++) {
        cin >> L[i] >> R[i];
        L[i]--, R[i]--;
    }

//    vector<LazySegmentTree> dp(K + 1, LazySegmentTree(vector<LL>(K, 0)));
//    dp[0].add(0, 1, 1);

    LazySegmentTree dp(vector<LL>(K, 0));
    dp.add(0, 1, 1);

    //
    for (int i = 0; i < K; i++) {
        vector<pair<pair<LL, LL>, LL>> ed;
        for (int j = 0; j < M; j++) {
            int l = L[j];
            int r = R[j];
            LL d = dp.getsum(l, r + 1);
            ed.push_back(make_pair(make_pair(l, r), d));
        }
        dp.reset();
        for (auto x: ed) {
            dp.add(x.first.first, x.first.second + 1, x.second);
        }
    }

    //  cout << dp[K].getsum(N - 1, N);

    cout << dp.getsum(N - 1, N);

    return 0;
}














































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