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답안 #500966

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
500966 2022-01-01T18:27:03 Z n00bie_1004 Pinball (JOI14_pinball) C++17
100 / 100
 606 ms 47596 KB 
#include <bits/stdc++.h>
typedef long long int ll; 

using namespace std;

struct pr {
    ll l, r, mid, cost; 
}; 
struct segtree {
    ll n;
    vector<ll> st; 

    ll merge(ll a, ll b){
        return min(a, b);
    } 

    void init(ll x){
        n = x; 
        st.assign(4 * n, 1e18); 
    }

    void update1(ll idx, ll l, ll r, ll pos, ll val){
        if(l != r){
            ll mid = l + (r - l) / 2; 
            if(pos <= mid)
                update1(2 * idx, l, mid, pos, val);
            else 
                update1(2 * idx + 1, mid + 1, r, pos, val);
            st[idx] = merge(st[2 * idx], st[2 * idx + 1]); 
        }
        else {
            st[idx] = min(st[idx], val); 
            return;
        }
    }
    void update2(ll pos, ll val){
        update1(1, 0, n - 1, pos, val);
    } 

    ll query1(ll idx, ll r_l, ll r_r, ll q_l, ll q_r){ 
        if(q_r >= r_r && q_l <= r_l) 
            return st[idx];
        if(q_l > r_r || q_r < r_l) 
            return 1e18; 
        ll mid = r_l + (r_r - r_l) / 2; 
        return merge(query1(2 * idx, r_l, mid, q_l, q_r), query1(2 * idx + 1, mid + 1, r_r, q_l, q_r)); 
    }
    ll query2(ll q_l, ll q_r){
        return query1(1, 0, n - 1, q_l, q_r);
    } 
};
int main(){ 
    ios_base::sync_with_stdio(false); cin.tie(NULL); 
    ll m, n;
    cin >> m >> n;
    vector<pr> v(m);  
    set<ll> s; 
    s.insert(0); 
    for(ll i=0;i<m;i++){
        cin >> v[i].l >> v[i].r >> v[i].mid >> v[i].cost;
        --v[i].l; 
        s.insert(v[i].l); 
        --v[i].mid; 
        s.insert(v[i].mid);
        --v[i].r; 
        s.insert(v[i].r); 
    }
    s.insert(n - 1);
    map<ll, ll> pos;  
    ll new_pos = 0;
    for(auto x : s)
        pos[x] = new_pos++; 
    for(ll i=0;i<m;i++){
        v[i].l = pos[v[i].l]; 
        v[i].mid = pos[v[i].mid];
        v[i].r = pos[v[i].r]; 
    }
    n = pos[n - 1];
    n++;  
    segtree ST; 
    vector<ll> dpL(m, 1e18); 
    ST.init(n); 
    for(ll i=0;i<m;i++){
        if(v[i].l == 0){
            dpL[i] = v[i].cost;
            ST.update2(v[i].mid, dpL[i]); 
            continue; 
        }
        ll val = ST.query2(v[i].l, v[i].r); 
        dpL[i] = min(dpL[i], val + v[i].cost); 
        ST.update2(v[i].mid, dpL[i]); 
    }
    vector<ll> dpR(m, 1e18); 
    ST.init(n);
    for(ll i=0;i<m;i++){
        if(v[i].r == n - 1){
            dpR[i] = v[i].cost; 
            ST.update2(v[i].mid, dpR[i]); 
            continue; 
        }
        ll val = ST.query2(v[i].l, v[i].r); 
        dpR[i] = min(dpR[i], val + v[i].cost); 
        ST.update2(v[i].mid, dpR[i]); 
    }
    ll ans = 1e18; 
    for(ll i=0;i<m;i++)
        ans = min(ans, dpL[i] + dpR[i] - v[i].cost);
    if(ans >= 1e18)
        ans = -1;
    cout << ans << "\n"; 
    cerr << "\nTime elapsed: " << 1000 * clock() / CLOCKS_PER_SEC << "ms\n"; 
}

Subtask #1
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 312 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 0 ms 312 KB Output is correct
8 Correct 0 ms 204 KB Output is correct

Subtask #2
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 312 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 0 ms 312 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 312 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 0 ms 312 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 2 ms 460 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 2 ms 716 KB Output is correct
20 Correct 2 ms 460 KB Output is correct
21 Correct 1 ms 460 KB Output is correct
22 Correct 2 ms 716 KB Output is correct
23 Correct 2 ms 716 KB Output is correct
24 Correct 3 ms 768 KB Output is correct

Subtask #4
49.0 / 49.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 312 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 0 ms 312 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 2 ms 460 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 2 ms 716 KB Output is correct
20 Correct 2 ms 460 KB Output is correct
21 Correct 1 ms 460 KB Output is correct
22 Correct 2 ms 716 KB Output is correct
23 Correct 2 ms 716 KB Output is correct
24 Correct 3 ms 768 KB Output is correct
25 Correct 24 ms 3196 KB Output is correct
26 Correct 78 ms 9340 KB Output is correct
27 Correct 226 ms 18064 KB Output is correct
28 Correct 133 ms 5556 KB Output is correct
29 Correct 161 ms 15604 KB Output is correct
30 Correct 203 ms 7712 KB Output is correct
31 Correct 450 ms 29028 KB Output is correct
32 Correct 346 ms 22852 KB Output is correct
33 Correct 50 ms 9540 KB Output is correct
34 Correct 205 ms 23944 KB Output is correct
35 Correct 296 ms 47400 KB Output is correct
36 Correct 606 ms 47480 KB Output is correct
37 Correct 487 ms 47596 KB Output is correct
38 Correct 459 ms 47488 KB Output is correct