Submission #1183373

#	Time	Username	Problem	Language	Result	Execution time	Memory
1183373		SmuggingSpun	Snowball (JOI21_ho_t2)	C++20	0 / 100	2597 ms	1152844 KiB

Main

#include<bits/stdc++.h>
#define taskname "B"
using namespace std;
typedef long long ll;
int n, q;
namespace sub1{
    struct Node{
        ll l, r, sum;
        int lc, rc;
        Node(){}
        Node(ll _l, ll _r, ll _sum, int _lc, int _rc) : l(_l), r(_r), sum(_sum), lc(_lc), rc(_rc) {}
    };
    vector<Node>st(1, Node(-2e15, 2e15, 4e15 + 1, -1, -1));
    void new_left(int id, ll m){
        if(st[id].lc == -1){
            st[id].lc = st.size();
            st.emplace_back(Node(st[id].l, m, m - st[id].l + 1, -1, -1));
        }
    }
    void new_right(int id, ll m){
        if(st[id].rc == -1){
            st[id].rc = st.size();
            st.emplace_back(Node(m + 1, st[id].r, st[id].r - m, -1, -1));
        }
    }
    ll get(int id, ll u, ll v){
        if(st[id].r < u || st[id].l > v || st[id].sum == 0){
            return 0;
        }
        if(u <= st[id].l && v >= st[id].r){
            ll ans = st[id].sum;
            st[id].sum = 0;
            return ans;
        }
        ll m = (st[id].l + st[id].r) >> 1LL;
        new_left(id, m);
        new_right(id, m);
        ll ans = get(st[id].lc, u, v) + get(st[id].rc, u, v);
        st[id].sum = st[st[id].lc].sum + st[st[id].rc].sum;
        return ans;
    }
    void solve(){
        vector<ll>x(n), ans(n, 0);
        for(ll& v : x){
            cin >> v;
        }
        for(int _ = 0; _ < q; _++){
            ll w;
            cin >> w;
            if(w > 0){
                for(int i = n - 1; i > -1; x[i--] += w){
                    ans[i] += get(0, x[i], x[i] + w - 1);
                }
            }
            else{
                for(int i = 0; i < n; x[i++] += w){
                    ans[i] += get(0, x[i] + w, x[i] - 1);
                }
            }
        }
        for(ll& x : ans){
            cout << x << "\n";
        }
    }
}
namespace sub2{
    void solve(){

    }
}
int main(){
	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	if(fopen(taskname".inp", "r")){
		freopen(taskname".inp", "r", stdin);
	}
    cin >> n >> q;
    if(max(n, q) <= 2000){
        sub1::solve();
    }
    else{
        sub2::solve();
    }
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:74:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   74 |                 freopen(taskname".inp", "r", stdin);
      |                 ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 33
• Subtask 2: 0 / 67