結果

問題 No.871 かえるのうた
ユーザー Konton7Konton7
提出日時 2020-04-23 11:00:30
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 40 ms / 2,000 ms
コード長 4,887 bytes
コンパイル時間 2,249 ms
コンパイル使用メモリ 212,992 KB
実行使用メモリ 6,420 KB
最終ジャッジ日時 2023-08-20 09:34:15
合計ジャッジ時間 4,768 ms
ジャッジサーバーID
(参考情報)
judge11 / judge15
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 1 ms
4,380 KB
testcase_01 AC 2 ms
4,376 KB
testcase_02 AC 1 ms
4,376 KB
testcase_03 AC 2 ms
4,376 KB
testcase_04 AC 2 ms
4,380 KB
testcase_05 AC 2 ms
4,380 KB
testcase_06 AC 2 ms
4,376 KB
testcase_07 AC 1 ms
4,380 KB
testcase_08 AC 3 ms
4,380 KB
testcase_09 AC 3 ms
4,376 KB
testcase_10 AC 2 ms
4,376 KB
testcase_11 AC 2 ms
4,380 KB
testcase_12 AC 6 ms
4,380 KB
testcase_13 AC 3 ms
4,380 KB
testcase_14 AC 37 ms
6,192 KB
testcase_15 AC 37 ms
6,272 KB
testcase_16 AC 40 ms
6,220 KB
testcase_17 AC 34 ms
6,212 KB
testcase_18 AC 7 ms
4,380 KB
testcase_19 AC 38 ms
6,148 KB
testcase_20 AC 5 ms
4,376 KB
testcase_21 AC 15 ms
4,380 KB
testcase_22 AC 1 ms
4,380 KB
testcase_23 AC 1 ms
4,380 KB
testcase_24 AC 2 ms
4,376 KB
testcase_25 AC 3 ms
4,376 KB
testcase_26 AC 4 ms
4,376 KB
testcase_27 AC 5 ms
4,376 KB
testcase_28 AC 2 ms
4,376 KB
testcase_29 AC 15 ms
5,276 KB
testcase_30 AC 23 ms
5,460 KB
testcase_31 AC 2 ms
4,380 KB
testcase_32 AC 20 ms
5,436 KB
testcase_33 AC 29 ms
6,420 KB
testcase_34 AC 8 ms
4,380 KB
testcase_35 AC 19 ms
5,216 KB
testcase_36 AC 26 ms
5,824 KB
testcase_37 AC 16 ms
4,380 KB
testcase_38 AC 35 ms
5,892 KB
testcase_39 AC 32 ms
6,000 KB
testcase_40 AC 13 ms
5,208 KB
testcase_41 AC 1 ms
4,376 KB
testcase_42 AC 14 ms
5,440 KB
testcase_43 AC 2 ms
4,376 KB
testcase_44 AC 2 ms
4,376 KB
testcase_45 AC 2 ms
4,380 KB
testcase_46 AC 2 ms
4,380 KB
testcase_47 AC 2 ms
4,376 KB
testcase_48 AC 2 ms
4,376 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 <bits/stdc++.h>

using namespace std;
using ll = long long;
using VI = vector<int>;
using VL = vector<ll>;
using VS = vector<string>;
using VVI = vector<VI>;
using VVL = vector<VL>;
using PII = std::pair<int, int>;
using PLL = std::pair<ll, ll>;

#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define repr(i, n) for (int i = (int)(n)-1; i >= 0; i--)
#define rep2(i, s, n) for (int i = (s); i < (int)(n); i++)
#define rep3(i, s, n, d) for (int i = (s); i < (int)(n); i += (d))
#define allpt(v) (v).begin(), (v).end()
#define allpt_c(v) (v).cbegin(), (v).cend()
#define allpt_r(v) (v).rbegin(), (v).rend()

const int mod = 1e9 + 7, mod2 = 998244353, mod3 = 1e9 + 9;
const ll inf = 1e18;

const string wsp = " ";
const string tb = "\t";
const string rt = "\n";

template <typename T>
void show1dvec(const vector<T> &v)
{
    if (v.size() == 0)
        return;
    int n = v.size() - 1;
    rep(i, n) cout << v[i] << wsp;
    cout << v[n] << rt;

    return;
}

template <typename T>
void show2dvec(const vector<vector<T>> &v)
{
    int n = v.size();
    rep(i, n) show1dvec(v[i]);
}

template <typename T, typename S>
void show1dpair(const vector<pair<T, S>> &v)
{
    int n = v.size();
    rep(i, n) cout << v[i].first << wsp << v[i].second << rt;
    return;
}

template <typename T, typename S>
void pairzip(const vector<pair<T, S>> &v, vector<T> &t, vector<T> &s)
{
    int n = v.size();
    rep(i, n)
    {
        t.push_back(v[i].first);
        s.push_back(v[i].second);
    }
    return;
}

template <typename T>
void maxvec(vector<T> &v)
{
    T s = v[0];
    int n = v.size();
    rep(i, n - 1)
    {
        if (s > v[i + 1])
        {
            v[i + 1] = s;
        }
        s = v[i + 1];
    }
}

template <typename T, typename S>
bool myfind(T t, S s)
{
    return find(t.cbegin(), t.cend(), s) != t.cend();
}

bool check(int y, int x, int h, int w)
{
    return 0 <= y && y < h && 0 <= x && x < w;
}

template <typename T>
vector<T> cumsum(const vector<T> &v)
{
    T s = 0;
    vector<T> ret = {0};

    rep(i, v.size())
    {
        s += v[i];
        ret.push_back(s);
    }
    return ret;
}

bool iskadomatsu(int a, int b, int c)
{
    return (a != b && b != c && c != a) && ((a > b && b < c) || (a < b && b > c));
}

VS split(string s, char c)
{
    VS ret;
    string part;
    s += c;
    rep(i, s.length())
    {
        if (s[i] == c)
        {
            ret.emplace_back(part);
            part = "";
        }
        else if (s[i] != c)
        {
            part += s[i];
        }
    }
    return ret;
}

string removezero(string &s)
{
    string ret;
    for (auto z : s)
        if (z != '0')
            ret += z;
    return ret;
}

ll sumdigit(ll x)
{
    ll ans{0};
    while (x > 0)
    {
        ans += x % 10;
        x /= 10;
    }
    return ans;
}

struct node
{
    int parent = -1;
    ll parent_edge_length;
    ll offsplings = 1;
    VI children;
};

void dfs(int v, vector<vector<PLL>> &connect, vector<node> &nodes)
{
    for (const auto [u, c] : connect[v])
    {
        if (nodes[v].parent != u)
        {
            nodes[u].parent = v;
            nodes[u].parent_edge_length = c;
            nodes[v].children.emplace_back(u);
            dfs(u, connect, nodes);
            nodes[v].offsplings += nodes[u].offsplings;
        }
    }
}



int main()
{

    cin.tie(0);
    ios::sync_with_stdio(false);

#ifdef DEBUG
    cout << "DEBUG MODE" << endl;
    ifstream in("input.txt"); //for debug
    cin.rdbuf(in.rdbuf());    //for debug
#endif

    int n, k, ans{1}, addfrog{1};
    cin >> n >> k;
    k--;
    ll l, r;
    VL center(n), range(n);
    PLL leftfrog, rightfrog;
    deque<PLL> leftfrogs, rightfrogs;
    rep(i, n)
    {
        cin >> center[i];
    }
    rep(i, n)
    {
        cin >> range[i];
    }

    l = center[k] - range[k];
    r = center[k] + range[k];

    rep2(i, k + 1, n)
    {
        rightfrogs.push_back(make_pair(center[i], range[i]));
    }
    repr(i, k)
    {
        leftfrogs.push_back(make_pair(center[i], range[i]));
    }

    while (addfrog)
    {
        addfrog = 0;
        if (!rightfrogs.empty())
        {
            rightfrog = rightfrogs.front();
            if (rightfrog.first <= r)
            {
                r = max(rightfrog.first + rightfrog.second, r);
                l = min(rightfrog.first - rightfrog.second, l);
                rightfrogs.pop_front();
                addfrog++;
            }
        }
        
        
        if (!leftfrogs.empty())
        {
            leftfrog = leftfrogs.front();
            if (leftfrog.first >= l)
            {
                r = max(leftfrog.first + leftfrog.second, r);
                l = min(leftfrog.first - leftfrog.second, l);
                leftfrogs.pop_front();
                addfrog++;
            }
        }
        ans += addfrog;
    }

    cout << ans << rt;
    
    return 0;
}
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