oj.uz

답안 #1102338

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1102338 2024-10-18T02:47:09 Z ro9669 나일강 (IOI24_nile) C++17
82 / 100
 69 ms 15632 KB 
#include <bits/stdc++.h>
#define fi first
#define se second
#define all(v) v.begin() , v.end()
#define sz(v) int(v.size())
#define unq(v) sort(all(v)); v.resize(unique(all(v)) - v.begin());
//#include "nile.h"
using namespace std;

typedef long long ll;
typedef pair<int , int> ii;
typedef pair<long long , int> lli;

const int maxN = int(2e5)+7;

int n , q;
ll dp[maxN];
vector<int> w , a , b , e , id;
vector<ll> res;

namespace sub1{
    bool check(){
        return (q <= 5 && n <= 2000);
    }

    void solve(){
        for (int d : e){
            dp[0] = 0;
            for (int i = 0 ; i < n ; i++){
                ll s = 0;
                int x = INT_MAX;
                dp[i + 1] = ll(1e18);
                for (int j = i ; j >= 0 ; j--){
                    s += b[id[j]];
                    x = min(x , a[id[j]] - b[id[j]]);
                    if (w[id[i]] - w[id[j]] <= d){
                        if ((i - j)&1){
                            dp[i + 1] = min(dp[i + 1] , dp[j] + s);
                        }
                        else{
                            dp[i + 1] = min(dp[i + 1] , dp[j] + s + 1ll * x);
                        }
                    }
                    else{
                        break;
                    }
                }
            }
            res.push_back(dp[n]);
        }
    }
}

namespace sub2{
    bool check(){
        return (q <= 5);
    }

    void solve(){
        for (int d : e){
            dp[0] = 0;
            for (int i = 0 ; i < n ; i++){
                dp[i + 1] = dp[i] + 1ll * a[id[i]];
                if (i - 1 >= 0 && w[id[i]] - w[id[i - 1]] <= d){
                    dp[i + 1] = min(dp[i + 1] , dp[i - 1] + 1ll * b[id[i]] + 1ll * b[id[i - 1]]);
                }
                if (i - 2 >= 0 && w[id[i]] - w[id[i - 2]] <= d){
                    dp[i + 1] = min(dp[i + 1] , dp[i - 2] + 1ll * b[id[i]] + 1ll * a[id[i - 1]] + 1ll * b[id[i - 2]]);
                }
            }
            res.push_back(dp[n]);
        }
    }
}

namespace sub3{
    int fa[maxN];
    ll C[maxN] , S[maxN] , X[maxN] , cur_ans = 0;
    vector<pair<int , ii>> event;
    vector<ii> query;

    int root(int x){
        if (fa[x] < 0) return x; else return fa[x] = root(fa[x]);
    }

    void unite(int u , int v){
        u = root(u);
        v = root(v);
        if (u == v) return;
        if (-fa[u] < -fa[v]) swap(u , v);
        fa[u] += fa[v];
        fa[v] = u;
        S[u] += S[v];
        X[u] = min(X[u] , X[v]);
        cur_ans -= C[u] + C[v];
        if ((-fa[u])&1){
            C[u] = S[u] + X[u];
        }
        else{
            C[u] = S[u];
        }
        cur_ans += C[u];
    }

    void solve(){
        for (int i = 0 ; i < n ; i++){
            cur_ans += 1ll * a[id[i]];
            fa[i] = -1;
            C[i] = a[id[i]];
            S[i] = b[id[i]];
            X[i] = a[id[i]] - b[id[i]];
        }
        for (int i = 0 ; i < n - 1 ; i++){
            event.push_back({w[id[i + 1]] - w[id[i]] , {i , i + 1}});
        }
        res.resize(q);
        for (int i = 0 ; i < q ; i++){
            query.push_back({e[i] , i});
        }
        sort(all(query));
        sort(all(event));
        for (int i = 0 , j = -1 ; i < q ; i++){
            while (j + 1 < n - 1 && event[j + 1].fi <= query[i].fi){
                int u = event[j + 1].se.fi;
                int v = event[j + 1].se.se;
                unite(u , v);
                j++;
            }
            res[query[i].se] = cur_ans;
        }
    }
}

vector<long long> calculate_costs(vector<int> _w , vector<int> _a , vector<int> _b , vector<int> _e){
    w = _w; a = _a; b = _b; e = _e;
    n = sz(w) , q = sz(e);
    id.resize(n);
    for (int i = 0 ; i < n ; i++) id[i] = i;
    sort(all(id) , [](int x , int y){
         return w[x] < w[y];
    });
    if (sub1::check()){
        sub1::solve();
        return res;
    }
    if (sub2::check()){
        sub2::solve();
        return res;
    }
    sub3::solve();
    return res;
}

Subtask #0
0.0 / 0.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2384 KB Output is correct

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 25 ms 2384 KB Output is correct
2 Correct 21 ms 2384 KB Output is correct
3 Correct 19 ms 2384 KB Output is correct
4 Correct 19 ms 2384 KB Output is correct
5 Correct 19 ms 2384 KB Output is correct
6 Correct 19 ms 2384 KB Output is correct

Subtask #2
13.0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 24 ms 6240 KB Output is correct
2 Correct 25 ms 6224 KB Output is correct
3 Correct 25 ms 6224 KB Output is correct
4 Correct 23 ms 6224 KB Output is correct
5 Correct 32 ms 6216 KB Output is correct
6 Correct 33 ms 6216 KB Output is correct

Subtask #3
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 29 ms 6224 KB Output is correct
2 Correct 28 ms 6224 KB Output is correct
3 Correct 29 ms 6224 KB Output is correct
4 Correct 29 ms 6236 KB Output is correct
5 Correct 29 ms 6400 KB Output is correct
6 Correct 27 ms 6224 KB Output is correct

Subtask #4
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 25 ms 2384 KB Output is correct
2 Correct 21 ms 2384 KB Output is correct
3 Correct 19 ms 2384 KB Output is correct
4 Correct 19 ms 2384 KB Output is correct
5 Correct 19 ms 2384 KB Output is correct
6 Correct 19 ms 2384 KB Output is correct
7 Correct 5 ms 2384 KB Output is correct
8 Correct 6 ms 2384 KB Output is correct
9 Correct 5 ms 2384 KB Output is correct
10 Correct 6 ms 2384 KB Output is correct
11 Correct 6 ms 2384 KB Output is correct
12 Correct 5 ms 2384 KB Output is correct

Subtask #5
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 25 ms 2384 KB Output is correct
2 Correct 21 ms 2384 KB Output is correct
3 Correct 19 ms 2384 KB Output is correct
4 Correct 19 ms 2384 KB Output is correct
5 Correct 19 ms 2384 KB Output is correct
6 Correct 19 ms 2384 KB Output is correct
7 Correct 24 ms 6240 KB Output is correct
8 Correct 25 ms 6224 KB Output is correct
9 Correct 25 ms 6224 KB Output is correct
10 Correct 23 ms 6224 KB Output is correct
11 Correct 32 ms 6216 KB Output is correct
12 Correct 33 ms 6216 KB Output is correct
13 Correct 29 ms 6224 KB Output is correct
14 Correct 28 ms 6224 KB Output is correct
15 Correct 29 ms 6224 KB Output is correct
16 Correct 29 ms 6236 KB Output is correct
17 Correct 29 ms 6400 KB Output is correct
18 Correct 27 ms 6224 KB Output is correct
19 Correct 5 ms 2384 KB Output is correct
20 Correct 6 ms 2384 KB Output is correct
21 Correct 5 ms 2384 KB Output is correct
22 Correct 6 ms 2384 KB Output is correct
23 Correct 6 ms 2384 KB Output is correct
24 Correct 5 ms 2384 KB Output is correct
25 Correct 36 ms 6240 KB Output is correct
26 Correct 34 ms 6216 KB Output is correct
27 Correct 36 ms 6216 KB Output is correct
28 Correct 35 ms 6224 KB Output is correct
29 Correct 34 ms 6224 KB Output is correct
30 Correct 33 ms 6236 KB Output is correct

Subtask #6
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 29 ms 6224 KB Output is correct
2 Correct 28 ms 6224 KB Output is correct
3 Correct 29 ms 6224 KB Output is correct
4 Correct 29 ms 6236 KB Output is correct
5 Correct 29 ms 6400 KB Output is correct
6 Correct 27 ms 6224 KB Output is correct
7 Correct 62 ms 15552 KB Output is correct
8 Correct 59 ms 15416 KB Output is correct
9 Correct 58 ms 15552 KB Output is correct
10 Correct 59 ms 15552 KB Output is correct
11 Correct 57 ms 15560 KB Output is correct
12 Correct 56 ms 15444 KB Output is correct
13 Correct 57 ms 15632 KB Output is correct
14 Correct 69 ms 15552 KB Output is correct
15 Correct 59 ms 15552 KB Output is correct

Subtask #7
0.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2384 KB Output is correct
2 Correct 25 ms 2384 KB Output is correct
3 Correct 21 ms 2384 KB Output is correct
4 Correct 19 ms 2384 KB Output is correct
5 Correct 19 ms 2384 KB Output is correct
6 Correct 19 ms 2384 KB Output is correct
7 Correct 19 ms 2384 KB Output is correct
8 Correct 24 ms 6240 KB Output is correct
9 Correct 25 ms 6224 KB Output is correct
10 Correct 25 ms 6224 KB Output is correct
11 Correct 23 ms 6224 KB Output is correct
12 Correct 32 ms 6216 KB Output is correct
13 Correct 33 ms 6216 KB Output is correct
14 Correct 29 ms 6224 KB Output is correct
15 Correct 28 ms 6224 KB Output is correct
16 Correct 29 ms 6224 KB Output is correct
17 Correct 29 ms 6236 KB Output is correct
18 Correct 29 ms 6400 KB Output is correct
19 Correct 27 ms 6224 KB Output is correct
20 Correct 5 ms 2384 KB Output is correct
21 Correct 6 ms 2384 KB Output is correct
22 Correct 5 ms 2384 KB Output is correct
23 Correct 6 ms 2384 KB Output is correct
24 Correct 6 ms 2384 KB Output is correct
25 Correct 5 ms 2384 KB Output is correct
26 Correct 36 ms 6240 KB Output is correct
27 Correct 34 ms 6216 KB Output is correct
28 Correct 36 ms 6216 KB Output is correct
29 Correct 35 ms 6224 KB Output is correct
30 Correct 34 ms 6224 KB Output is correct
31 Correct 33 ms 6236 KB Output is correct
32 Correct 62 ms 15552 KB Output is correct
33 Correct 59 ms 15416 KB Output is correct
34 Correct 58 ms 15552 KB Output is correct
35 Correct 59 ms 15552 KB Output is correct
36 Correct 57 ms 15560 KB Output is correct
37 Correct 56 ms 15444 KB Output is correct
38 Correct 57 ms 15632 KB Output is correct
39 Correct 69 ms 15552 KB Output is correct
40 Correct 59 ms 15552 KB Output is correct
41 Correct 59 ms 15560 KB Output is correct
42 Incorrect 60 ms 15552 KB Output isn't correct
43 Halted 0 ms 0 KB -