Submission #1221702

#	Time	Username	Problem	Language	Result	Execution time	Memory
1221702		Robert_junior	Addk (eJOI21_addk)	C++20	92 / 100	29 ms	4936 KiB

Main

#include<bits/stdc++.h>
using namespace std;
#define int long long
#define all(x) x.begin(), x.end()
#define ins insert
#define pb push_back
#define F first
#define S second
const int N = 1e6+4, M = 5e5 + 7;
const int mod = 1e9 + 7;
int a[N], pf[N], pf1[N], sf[N];
void solve(){
    int n, k, q;
    cin>>n>>k;
    int a[n + 1];
    for(int i = 1; i <= n; i++){
        cin>>a[i];
        pf[i] = pf[i - 1] + a[i];
        pf1[i] = pf1[i - 1] + a[i] * i;
    }
    for(int i = n; i >= 1; i--){
        sf[i] = sf[i + 1] + a[i] * (n - i + 1);
    }
    cin>>q;
    while(q--){
        int f;
        cin>>f;
        if(f == 1){
            vector<int>v, v1;
            for(int i = 0; i < k; i++){
                int x;
                cin>>x;
                v.pb(x);
                v1.pb(a[x]);
            }
            for(int i = 0; i < k; i++){
                a[v[i]] = v1[(i + 1) % k];
            }
        }
        else{
            int sum = 0, l, r, m, l1, r1;
            cin>>l>>r>>m;
            int len = r - l + 1;
            int mid = min(m, (r - l + 1) - m + 1);
            if(mid * 2 <= len){
                sum += (pf[r - mid] - pf[l + mid - 1]) * mid;
                sum += (pf1[l + mid - 1] - pf1[l - 1]) - (pf[l + mid - 1] - pf[l - 1]) * (l - 1);
                sum += (sf[r - mid + 1] - sf[r + 1]) - (pf[r] - pf[r - mid]) * (n - r);
            }
            else{
                for(int i = l; i <= r; i++){
                    sum += a[i] * min({i - l + 1, r - i + 1, mid});
                }
            }
            cout<<sum<<'\n';
        }
    }
}
main(){
    ios_base :: sync_with_stdio(false);
    cin.tie(nullptr); 
    int t = 1;
    //cin>>t; 
    for(int i = 1; i <= t; i++){
        //cout<<"Case "<<i<<": ";
        solve();
    }
}

Compilation message (stderr)

Main.cpp:59:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   59 | main(){
      | ^~~~

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