oj.uz

답안 #415485

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
415485 2021-06-01T07:08:58 Z wiwiho Sky Walking (IOI19_walk) C++14
33 / 100
 319 ms 27816 KB 
#include "walk.h"

#include <bits/stdc++.h>

#define eb emplace_back
#define mp make_pair
#define F first
#define S second
#define iter(a) a.begin(), a.end()
#define printv(a, b) { \
    for(auto pv : a) b << pv << " "; \
    b << "\n"; \
}
#define lsort(a) sort(iter(a))

using namespace std;

typedef long long ll;

using pll = pair<ll, ll>;
using pii = pair<int, int>;

const ll MAX = 1LL << 60;

struct SegmentTree{
    vector<ll> st;

    void resize(int n){
        st.resize(4 * n, MAX);
    }
        
    void modify(int pos, ll v, int L, int R, int id){
        if(L == R){
            st[id] = v;
            return;
        }
        int M = (L + R) / 2;
        if(pos <= M) modify(pos, v, L, M, 2 * id + 1);
        else modify(pos, v, M + 1, R, 2 * id + 2);
        st[id] = min(st[2 * id + 1], st[2 * id + 2]);
    }

    ll query(int l, int r, int L, int R, int id){
        if(l == L && r == R){
            return st[id];
        }
        int M = (L + R) / 2;
        if(r <= M) return query(l, r, L, M, 2 * id + 1);
        else if(l > M) return query(l, r, M + 1, R, 2 * id + 2);
        else return min(query(l, M, L, M, 2 * id + 1), query(M + 1, r, M + 1, R, 2 * id + 2));
    }

};

int n, m;

vector<int> x, h, tl, tr, ty;
int sv, gv;
SegmentTree pre, suf;

vector<int> discr;
int sz;

int dcr(int v){
    return lower_bound(iter(discr), v) - discr.begin();
}

ll calc(int y){
    return min(discr[y] + pre.query(0, y, 0, sz - 1, 0), -discr[y] + suf.query(y, sz - 1, 0, sz - 1, 0));
}

ll min_distance(vector<int> _x, vector<int> _h, vector<int> _l, vector<int> _r, vector<int> _y, int _s, int _g){

    x = _x; h = _h; tl = _l; tr = _r; ty = _y; sv = _s; gv = _g;

    n = x.size();
    m = ty.size();
    assert(sv == 0 && gv == n - 1);

    discr = ty;
    discr.eb(0);
    lsort(discr);
    discr.resize(unique(iter(discr)) - discr.begin());
    sz = discr.size();

    pre.resize(sz);
    suf.resize(sz);

    vector<vector<int>> add(n), del(n);
    for(int i = 0; i < m; i++){
        add[tl[i]].eb(dcr(ty[i]));
        del[tr[i]].eb(dcr(ty[i]));
    }
    del[0].eb(0);

    pre.modify(0, 0, 0, sz - 1, 0);
    suf.modify(0, 0, 0, sz - 1, 0);
    vector<bool> use(sz);
    for(int i = 0; i < n - 1; i++){
        for(int j : add[i]){
            use[j] = true;
            ll v = calc(j);
            if(v == MAX) continue;
            //cerr << "test " << i << " " << discr[j] << " " << v << "\n";
            pre.modify(j, v - discr[j], 0, sz - 1, 0);
            suf.modify(j, v + discr[j], 0, sz - 1, 0);
        }
        for(int j : del[i]){
            if(use[j]) continue;
            pre.modify(j, MAX, 0, sz - 1, 0);
            suf.modify(j, MAX, 0, sz - 1, 0);
        }
        for(int j : add[i]) use[j] = false;
        //cerr << "test " << i << "  ";
        /*for(int j = 0; j < sz; j++){
            cerr << pre.query(j, j, 0, sz - 1, 0) + discr[j] << " ";
        }*/
        //cerr << "\n";
    }

    ll v = calc(0);
    if(v == MAX) return -1;
    return v + x[n - 1] - x[0];
}

Subtask #1
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 1 ms 332 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #2
0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 1 ms 332 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #3
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 29 ms 3964 KB Output is correct
2 Correct 176 ms 11708 KB Output is correct
3 Correct 191 ms 14780 KB Output is correct
4 Correct 287 ms 25528 KB Output is correct
5 Correct 319 ms 24084 KB Output is correct
6 Correct 300 ms 25380 KB Output is correct
7 Correct 165 ms 18300 KB Output is correct
8 Correct 312 ms 27816 KB Output is correct
9 Correct 273 ms 26508 KB Output is correct
10 Correct 173 ms 21304 KB Output is correct
11 Correct 15 ms 4540 KB Output is correct

Subtask #4
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 29 ms 3964 KB Output is correct
2 Correct 176 ms 11708 KB Output is correct
3 Correct 191 ms 14780 KB Output is correct
4 Correct 287 ms 25528 KB Output is correct
5 Correct 319 ms 24084 KB Output is correct
6 Correct 300 ms 25380 KB Output is correct
7 Correct 165 ms 18300 KB Output is correct
8 Correct 312 ms 27816 KB Output is correct
9 Correct 273 ms 26508 KB Output is correct
10 Correct 173 ms 21304 KB Output is correct
11 Correct 15 ms 4540 KB Output is correct
12 Correct 185 ms 14876 KB Output is correct
13 Correct 295 ms 25484 KB Output is correct
14 Correct 255 ms 24096 KB Output is correct
15 Correct 171 ms 20512 KB Output is correct
16 Correct 167 ms 20632 KB Output is correct
17 Correct 198 ms 20628 KB Output is correct
18 Correct 187 ms 20404 KB Output is correct
19 Correct 181 ms 20636 KB Output is correct
20 Correct 146 ms 18284 KB Output is correct
21 Correct 32 ms 9412 KB Output is correct
22 Correct 198 ms 21304 KB Output is correct
23 Correct 214 ms 21736 KB Output is correct
24 Correct 243 ms 22640 KB Output is correct
25 Correct 241 ms 22644 KB Output is correct
26 Correct 226 ms 24000 KB Output is correct
27 Correct 239 ms 24532 KB Output is correct
28 Correct 292 ms 25448 KB Output is correct
29 Correct 242 ms 25312 KB Output is correct
30 Correct 166 ms 18276 KB Output is correct
31 Correct 315 ms 26556 KB Output is correct
32 Correct 158 ms 19164 KB Output is correct
33 Correct 177 ms 21024 KB Output is correct
34 Correct 179 ms 21376 KB Output is correct
35 Correct 180 ms 20600 KB Output is correct
36 Correct 181 ms 19700 KB Output is correct
37 Correct 126 ms 16956 KB Output is correct
38 Correct 121 ms 20668 KB Output is correct
39 Correct 160 ms 22172 KB Output is correct
40 Correct 147 ms 19684 KB Output is correct
41 Correct 109 ms 17860 KB Output is correct

Subtask #5
0 / 43.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 1 ms 332 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -