Submission #1025177

#	Time	Username	Problem	Language	Result	Execution time	Memory
1025177		coolboy19521	Addk (eJOI21_addk)	C++17	92 / 100	41 ms	8276 KiB

Main

#include "bits/stdc++.h"
#define int long long

using namespace std;

const int sz = 1e5 + 5;

int pf[sz], sf[sz];
int pj[sz], sj[sz];
int a[sz];
int an;

void solve() {
    int t;
    cin >> t;

    if (1 == t) {
        int b;
        cin >> b;
        return;
    }

    int l, r, m;
    cin >> l >> r >> m;

    int n = r - l + 1;
    int mxv = n - m + 1;
    int le = l + mxv - 2;
    int rs = r - mxv + 2;
    int pjl = pj[le] - pj[l - 1];
    int pfl = pf[le] - pf[l - 1];
    int fpl = pjl - pfl * (l - 1);
    int sjr = sj[rs] - sj[r + 1];
    int sfr = sf[rs] - sf[r + 1];
    int fsr = sjr - sfr * (an - r);
    int rsms = l + mxv - 1;
    int rsme = r - mxv + 1;
    int rsm = pf[rsme] - pf[rsms - 1];
    int tsm = fpl + fsr + rsm * mxv;

    cout << tsm << '\n';
}

signed main() {
    cin.tie(nullptr)->sync_with_stdio(false);

    int n, k;
    cin >> n >> k;

    an = n;

    for (int i = 1; i <= n; i ++)
        cin >> a[i];

    for (int i = 1; i <= n; i ++) {
        pf[i] = pf[i - 1] + a[i];
        pj[i] = pj[i - 1] + i * a[i];
    }

    for (int i = 1; i <= n; i ++) {
        int rx = n - i + 1;
        sf[rx] = sf[rx + 1] + a[rx];
        sj[rx] = sj[rx + 1] + i * a[rx];
    }

    int q;
    cin >> q;

    while (q --)
        solve();
}

• Subtask 1: 36 / 36
• Subtask 2: 56 / 56
• Subtask 3: 0 / 8