Submission #763950

#	Time	Username	Problem	Language	Result	Execution time	Memory
763950		Cookie	Addk (eJOI21_addk)	C++14	92 / 100	64 ms	6596 KiB

Main

#include<bits/stdc++.h>
#include<fstream>
using namespace std;
ifstream fin("VNOICUP.INP");
ofstream fout("VNOICUP.OUT");
#define sz(a) (int)a.size()
#define ll long long
#define pb push_back
#define forr(i, a, b) for(int i = a; i < b; i++)
#define dorr(i, a, b) for(int i = a; i >= b; i--)
#define ld long double
#define vt vector
#include<fstream>
#define fi first
#define se second
#define pll pair<ll, ll>
#define pii pair<int, int>
const ld PI = 3.14159265359;
using u128 = __uint128_t;
const int mxn = 1e5 + 5;
int n, k;
struct BIT{
    ll bit[mxn + 1];
    void upd(int p, ll v){
        while(p <= n){
            bit[p] += v; p += p & (-p);
        }
    }
    ll get(int p){
        ll ans = 0;
        while(p){
            ans += bit[p]; p -= p & (-p);
        }
        return(ans);
    }
    ll query(int l, int r){
        if(l > r)return(0);
        return(get(r) - get(l - 1));
    }
};
BIT bit, bit2;

ll a[mxn + 1];
signed main(){
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    cin >> n >> k;
    for(int i = 1; i <= n; i++){
        cin >> a[i]; bit.upd(i, a[i]); bit2.upd(i, a[i] * i);
    }
    int q; cin >> q;
    for(int i = 1; i <= q; i++){
        int idq; cin >> idq;
        if(idq == 1){
            for(int j = 0; j < k; j++){
                int x; cin >> x;
            }
        }else{
            int l, r, m; cin >> l >> r >> m;
            ll ans = 0;
            /*
            for(int j = l; j <= r; j++){
                int low = max(j - m + 1, l), high = min(r - m + 1, j);
                ans += 1LL * (high - low + 1) * a[j];
            }
            cout << ans << "\n";
            */
            ll low = bit.query(l, l + m - 1) * l + bit2.query(l + m, r) - bit.query(l + m, r) * m + bit.query(l + m, r);
            ll high = bit.query(r - m + 1, r) * (r - m + 1) + bit2.query(l, r - m);
            //cout << high << " " << low << " " << "\n";
            cout << high - low + bit.query(l, r) << "\n";

        }
    }
    return(0);
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:59:16: warning: unused variable 'ans' [-Wunused-variable]
   59 |             ll ans = 0;
      |                ^~~

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