Submission #790800

#	Time	Username	Problem	Language	Result	Execution time	Memory
790800		otarius	Addk (eJOI21_addk)	C++17	100 / 100	196 ms	12100 KiB

Main

#include <iostream>
#include <algorithm>
#include <vector>
#include <set>
#include <cstring>
#include <queue>
#include <map>
#include <cmath>
#include <iomanip>
using namespace std;

#define ff first
#define sc second
#define pb push_back
#define ll long long
#define pll pair<ll, ll>
#define pii pair <int, int>
#define ull unsigned long long

// #define int long long
// #define int unsigned long long

const ll inf = 1e9 + 7;
const ll weirdMod = 998244353;

ll cur;
int pos[15];
struct node {
    ll lwgt = 0, rwgt = 0, sum = 0;
} t[400040];
void update(int v, int tl, int tr, int pos, int val) {
    if (tl == tr) {
        t[v].lwgt = val;
        t[v].rwgt = val;
        t[v].sum = val;
        return;
    } int tm = (tl + tr) / 2;
    if (pos <= tm)
        update(2 * v, tl, tm, pos, val);
    else update(2 * v + 1, tm + 1, tr, pos, val);
    t[v].sum = t[2 * v].sum + t[2 * v + 1].sum;
    t[v].lwgt = t[2 * v].lwgt + t[2 * v + 1].lwgt + (tm - tl + 1) * t[2 * v + 1].sum;
    t[v].rwgt = t[2 * v].rwgt + t[2 * v + 1].rwgt + (tr - tm) * t[2 * v].sum; // ???
}
ll getsum(int v, int tl, int tr, int l, int r) {
    if (l > r)
        return 0;
    if (tl == l && tr == r)
        return t[v].sum;
    int tm = (tl + tr) / 2;
    return getsum(2 * v, tl, tm, l, min(r, tm)) +
           getsum(2 * v + 1, tm + 1, tr, max(l, tm + 1), r);
}
ll getlwgt(int v, int tl, int tr, int l, int r) {
    if (l > r)
        return 0;
    if (tl == l && tr == r) {
        ll ans = cur * t[v].sum + t[v].lwgt;
        cur += (tr - tl + 1); return ans;
    } int tm = (tl + tr) / 2;
    return getlwgt(2 * v, tl, tm, l, min(r, tm)) +
           getlwgt(2 * v + 1, tm + 1, tr, max(l, tm + 1), r);
}
ll getrwgt(int v, int tl, int tr, int l, int r) {
    if (l > r)
        return 0;
    if (tl == l && tr == r) {
        ll ans = cur * t[v].sum + t[v].rwgt;
        cur += (tr - tl + 1); return ans;
    } int tm = (tl + tr) / 2;
    return getrwgt(2 * v + 1, tm + 1, tr, max(l, tm + 1), r) +
           getrwgt(2 * v, tl, tm, l, min(r, tm));
}
void solve() {
    int n, k;
    cin >> n >> k;
    int arr[n + 1];
    for (int i = 1; i <= n; i++) {
        cin >> arr[i];
        update(1, 1, n, i, arr[i]);
    } int q;
    cin >> q;
    int tc, l, r, m;
    while (q--) {
        cin >> tc;
        if (tc == 1) {
            for (int i = 1; i <= k; i++)
                cin >> pos[i];
            int tmp = arr[pos[1]];
            for (int i = 1; i < k; i++)
                arr[pos[i]] = arr[pos[i + 1]];
            arr[pos[k]] = tmp;
            for (int i = 1; i <= k; i++)
                update(1, 1, n, pos[i], arr[pos[i]]);
        } else {
            cin >> l >> r >> m;
            if (r - l + 1 >= 2 * (m - 1)) {
                ll lsum = getlwgt(1, 1, n, l, l + m - 2); cur = 0;
                ll rsum = getrwgt(1, 1, n, r - m + 2, r); cur = 0;
                ll allsum = getsum(1, 1, n, l + m - 1, r - m + 1) * m;
                cout << lsum + rsum + allsum << '\n';
            } else {
                ll val = (r - l + 1) - m + 1;
                ll lsum = getlwgt(1, 1, n, l, l + val - 2); cur = 0;
                ll rsum = getrwgt(1, 1, n, r - val + 2, r); cur = 0;
                ll allsum = getsum(1, 1, n, l + val - 1, r - val + 1) * val;
                cout << lsum + rsum + allsum << '\n';
            }
        }
    }
}
int32_t main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr); cout.tie(nullptr);
    
    int t = 1;
    // cin >> t;
    while (t--) {
        solve();
        cout << '\n';
    } return 0;
}

• Subtask 1: 36 / 36
• Subtask 2: 56 / 56
• Subtask 3: 8 / 8