oj.uz

Submission #623220

# Submission time Handle Problem Language Result Execution time Memory
623220 2022-08-05T10:42:18 Z wiwiho Sky Walking (IOI19_walk) C++14
100 / 100
 1922 ms 146252 KB 
#include "walk.h"
 
#include <bits/stdc++.h>
#include <bits/extc++.h>
 
#define StarBurstStream ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
#define iter(a) a.begin(), a.end()
#define riter(a) a.rbegin(), a.rend()
#define lsort(a) sort(iter(a))
#define gsort(a) sort(riter(a))
#define pb(a) push_back(a)
#define eb(a) emplace_back(a)
#define pf(a) push_front(a)
#define ef(a) emplace_front(a)
#define pob pop_back()
#define pof pop_front()
#define mp(a, b) make_pair(a, b)
#define F first
#define S second
#define mt make_tuple
#define gt(t, i) get<i>(t)
#define tomax(a, b) ((a) = max((a), (b)))
#define tomin(a, b) ((a) = min((a), (b)))
#define topos(a) ((a) = (((a) % MOD + MOD) % MOD))
#define uni(a) a.resize(unique(iter(a)) - a.begin())
#define printv(a, b) {bool pvaspace=false; \
for(auto pva : a){ \
    if(pvaspace) b << " "; pvaspace=true;\
    b << pva;\
}\
b << "\n";}
 
using namespace std;
using namespace __gnu_pbds;
 
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
 
using pii = pair<int, int>;
using pll = pair<ll, ll>;
using pdd = pair<ld, ld>;
using tiii = tuple<int, int, int>;
 
const ll MOD = 1000000007;
const ll MAX = 2147483647;
 
template<typename A, typename B>
ostream& operator<<(ostream& o, pair<A, B> p){
    return o << '(' << p.F << ',' << p.S << ')';
}
 
ll ifloor(ll a, ll b){
    if(b < 0) a *= -1, b *= -1;
    if(a < 0) return (a - b + 1) / b;
    else return a / b;
}
 
ll iceil(ll a, ll b){
    if(b < 0) a *= -1, b *= -1;
    if(a > 0) return (a + b - 1) / b;
    else return a / b;
}
 
struct bridge{
    int l, r, y;
    int lid = -1, rid = -1;
};
 
ll min_distance(vector<int> X, vector<int> H, vector<int> L, vector<int> R, vector<int> Y, int from, int to){
 
    int n = X.size();
    int m = L.size();
    if(from > to) swap(from, to);
 
    vector<vector<int>> sp(m);
    for(int i = 0; i < m; i++){
        sp[i].eb(L[i]);
        sp[i].eb(R[i]);
    }
 
    vector<vector<int>> lp(n + 1), rp(n + 1);
    for(int i = 0; i < m; i++){
        lp[L[i]].eb(i);
        rp[R[i]].eb(i);
    }
 
    {
        vector<int> v;
        set<int> now;
        for(int i = 0; i < n; i++){
            while(!v.empty() && H[v.back()] <= H[i]) v.pob;
            v.eb(i);
            for(int j : lp[i]) now.insert(j);
            if(i == from || i == to){
                for(int j : now){
                    int y = Y[j];
                    auto it = lower_bound(iter(v), y, [&](int e, int val){ return val <= H[e]; } );
                    it--;
                    int pos = *it;
                    sp[j].eb(pos);
                }
            }
            for(int j : rp[i]) now.erase(j);
        }
    }
 
    {
        vector<int> v;
        set<int> now;
        for(int i = n - 1; i >= 0; i--){
            while(!v.empty() && H[v.back()] <= H[i]) v.pob;
            v.eb(i);
            for(int j : rp[i]) now.insert(j);
            if(i == from || i == to){
                for(int j : now){
                    int y = Y[j];
                    auto it = lower_bound(iter(v), y, [&](int e, int val){ return val <= H[e]; } );
                    it--;
                    int pos = *it;
                    sp[j].eb(pos);
                }
            }
            for(int j : lp[i]) now.erase(j);
        }
    }
 
    vector<bridge> bri;
    for(int i = 0; i < m; i++){
        lsort(sp[i]);
        uni(sp[i]);
        //cerr << "bridge " << i << " : ";
        //printv(sp[i], cerr);
        for(int j = 0; j + 1 < (int)sp[i].size(); j++){
            bri.eb(bridge({sp[i][j], sp[i][j + 1], Y[i]}));
        }
    }
 
    fill(iter(lp), vector<int>());
    fill(iter(rp), vector<int>());
 
    for(auto i : bri){
        lp[i.l].eb(i.y);
        rp[i.r].eb(i.y);
    }
    
    vector<pii> ps;
    {
        multiset<int> now;
        for(int i = 0; i < n; i++){
            for(int j : lp[i]) now.insert(j);
 
            auto add = [&](int y){
                //cerr << "add " << X[i] << " " << y << "\n";
                ps.eb(mp(X[i], y));
                auto it = now.upper_bound(y);
                if(it != now.end() && *it <= H[i]) ps.eb(mp(X[i], *it));
                it = now.lower_bound(y);
                if(it != now.begin()) ps.eb(mp(X[i], *prev(it)));
            };
 
            for(int j : lp[i]) add(j);
            for(int j : rp[i]) add(j);
 
            for(int j : rp[i]) now.erase(now.find(j));
        }
    }
 
    ps.eb(mp(X[from], 0));
    ps.eb(mp(X[to], 0));
    lsort(ps);
    uni(ps);
    //printv(ps, cerr);
 
    auto getid = [&](int x, int y){
        return lower_bound(iter(ps), mp(x, y)) - ps.begin();
    };
 
    int sid = getid(X[from], 0);
    int gid = getid(X[to], 0);
    for(auto& i : bri){
        i.lid = getid(X[i.l], i.y);
        i.rid = getid(X[i.r], i.y);
    }
 
    int sz = ps.size();
    vector<vector<pll>> g(sz);
    auto addedge = [&](int u, int v){
        ll w = abs(ps[u].F - ps[v].F) + abs(ps[u].S - ps[v].S);
        //cerr << "addedge " << u << " " << ps[u] << " " << v << " " << ps[v] << " " << w << "\n";
        g[u].eb(mp(v, w));
        g[v].eb(mp(u, w));
    };
 
    for(int i = 0; i + 1 < sz; i++){
        if(ps[i].F == ps[i + 1].F){
            addedge(i, i + 1);
        }
    }
    
    vector<int> tmp(sz);
    iota(iter(tmp), 0);
    auto comp = [&](int a, int b){ return mp(ps[a].S, ps[a].F) < mp(ps[b].S, ps[b].F); };
    sort(iter(tmp), comp);
 
    for(auto i : bri){
        int pos = lower_bound(iter(tmp), i.lid, comp) - tmp.begin();
        while(tmp[pos] != i.rid){
            int now = tmp[pos], nxt = tmp[pos + 1];
            addedge(now, nxt);
            pos++;
        }
    }
 
    vector<ll> dis(sz, 1LL << 60);
    std::priority_queue<pll, vector<pll>, greater<>> pq;
    pq.push(mp(0, sid));
    dis[sid] = 0;
    while(!pq.empty()){
        int now = pq.top().S;
        ll d = pq.top().F;
        pq.pop();
        if(d != dis[now]) continue;
        
        for(pll i : g[now]){
            if(dis[i.F] <= d + i.S) continue;
            dis[i.F] = d + i.S;
            pq.push(mp(d + i.S, i.F));
        }
    }
 
    if(dis[gid] == (1LL << 60)) return -1;
	return dis[gid];
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 340 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 636 ms 68996 KB Output is correct
4 Correct 593 ms 76024 KB Output is correct
5 Correct 408 ms 58944 KB Output is correct
6 Correct 433 ms 54392 KB Output is correct
7 Correct 452 ms 59172 KB Output is correct
8 Correct 696 ms 74304 KB Output is correct
9 Correct 519 ms 72904 KB Output is correct
10 Correct 651 ms 82128 KB Output is correct
11 Correct 485 ms 59068 KB Output is correct
12 Correct 300 ms 47160 KB Output is correct
13 Correct 632 ms 86216 KB Output is correct
14 Correct 398 ms 43740 KB Output is correct
15 Correct 393 ms 45360 KB Output is correct
16 Correct 322 ms 47352 KB Output is correct
17 Correct 347 ms 45512 KB Output is correct
18 Correct 506 ms 54568 KB Output is correct
19 Correct 10 ms 2256 KB Output is correct
20 Correct 121 ms 20952 KB Output is correct
21 Correct 294 ms 45292 KB Output is correct
22 Correct 277 ms 46092 KB Output is correct
23 Correct 462 ms 54008 KB Output is correct
24 Correct 297 ms 46464 KB Output is correct
25 Correct 302 ms 45540 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 100 ms 15808 KB Output is correct
2 Correct 829 ms 88000 KB Output is correct
3 Correct 887 ms 91800 KB Output is correct
4 Correct 977 ms 99248 KB Output is correct
5 Correct 1080 ms 100668 KB Output is correct
6 Correct 993 ms 94136 KB Output is correct
7 Correct 422 ms 54072 KB Output is correct
8 Correct 291 ms 43064 KB Output is correct
9 Correct 933 ms 88980 KB Output is correct
10 Correct 432 ms 57384 KB Output is correct
11 Correct 10 ms 3388 KB Output is correct

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 100 ms 15808 KB Output is correct
2 Correct 829 ms 88000 KB Output is correct
3 Correct 887 ms 91800 KB Output is correct
4 Correct 977 ms 99248 KB Output is correct
5 Correct 1080 ms 100668 KB Output is correct
6 Correct 993 ms 94136 KB Output is correct
7 Correct 422 ms 54072 KB Output is correct
8 Correct 291 ms 43064 KB Output is correct
9 Correct 933 ms 88980 KB Output is correct
10 Correct 432 ms 57384 KB Output is correct
11 Correct 10 ms 3388 KB Output is correct
12 Correct 919 ms 93532 KB Output is correct
13 Correct 817 ms 102448 KB Output is correct
14 Correct 1074 ms 104732 KB Output is correct
15 Correct 711 ms 81404 KB Output is correct
16 Correct 726 ms 85864 KB Output is correct
17 Correct 828 ms 102196 KB Output is correct
18 Correct 707 ms 81428 KB Output is correct
19 Correct 717 ms 85476 KB Output is correct
20 Correct 452 ms 55568 KB Output is correct
21 Correct 33 ms 9252 KB Output is correct
22 Correct 576 ms 79472 KB Output is correct
23 Correct 516 ms 74556 KB Output is correct
24 Correct 390 ms 54292 KB Output is correct
25 Correct 478 ms 69380 KB Output is correct
26 Correct 358 ms 42624 KB Output is correct
27 Correct 1285 ms 104912 KB Output is correct
28 Correct 865 ms 101164 KB Output is correct
29 Correct 1192 ms 97948 KB Output is correct
30 Correct 462 ms 56752 KB Output is correct
31 Correct 1041 ms 92828 KB Output is correct
32 Correct 390 ms 53608 KB Output is correct
33 Correct 354 ms 53024 KB Output is correct
34 Correct 452 ms 56592 KB Output is correct
35 Correct 467 ms 60576 KB Output is correct
36 Correct 391 ms 51284 KB Output is correct
37 Correct 290 ms 45260 KB Output is correct
38 Correct 314 ms 46372 KB Output is correct
39 Correct 540 ms 53872 KB Output is correct
40 Correct 356 ms 46552 KB Output is correct
41 Correct 322 ms 45660 KB Output is correct

Subtask #5
43.0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 636 ms 68996 KB Output is correct
21 Correct 593 ms 76024 KB Output is correct
22 Correct 408 ms 58944 KB Output is correct
23 Correct 433 ms 54392 KB Output is correct
24 Correct 452 ms 59172 KB Output is correct
25 Correct 696 ms 74304 KB Output is correct
26 Correct 519 ms 72904 KB Output is correct
27 Correct 651 ms 82128 KB Output is correct
28 Correct 485 ms 59068 KB Output is correct
29 Correct 300 ms 47160 KB Output is correct
30 Correct 632 ms 86216 KB Output is correct
31 Correct 398 ms 43740 KB Output is correct
32 Correct 393 ms 45360 KB Output is correct
33 Correct 322 ms 47352 KB Output is correct
34 Correct 347 ms 45512 KB Output is correct
35 Correct 506 ms 54568 KB Output is correct
36 Correct 10 ms 2256 KB Output is correct
37 Correct 121 ms 20952 KB Output is correct
38 Correct 294 ms 45292 KB Output is correct
39 Correct 277 ms 46092 KB Output is correct
40 Correct 462 ms 54008 KB Output is correct
41 Correct 297 ms 46464 KB Output is correct
42 Correct 302 ms 45540 KB Output is correct
43 Correct 100 ms 15808 KB Output is correct
44 Correct 829 ms 88000 KB Output is correct
45 Correct 887 ms 91800 KB Output is correct
46 Correct 977 ms 99248 KB Output is correct
47 Correct 1080 ms 100668 KB Output is correct
48 Correct 993 ms 94136 KB Output is correct
49 Correct 422 ms 54072 KB Output is correct
50 Correct 291 ms 43064 KB Output is correct
51 Correct 933 ms 88980 KB Output is correct
52 Correct 432 ms 57384 KB Output is correct
53 Correct 10 ms 3388 KB Output is correct
54 Correct 919 ms 93532 KB Output is correct
55 Correct 817 ms 102448 KB Output is correct
56 Correct 1074 ms 104732 KB Output is correct
57 Correct 711 ms 81404 KB Output is correct
58 Correct 726 ms 85864 KB Output is correct
59 Correct 828 ms 102196 KB Output is correct
60 Correct 707 ms 81428 KB Output is correct
61 Correct 717 ms 85476 KB Output is correct
62 Correct 452 ms 55568 KB Output is correct
63 Correct 33 ms 9252 KB Output is correct
64 Correct 576 ms 79472 KB Output is correct
65 Correct 516 ms 74556 KB Output is correct
66 Correct 390 ms 54292 KB Output is correct
67 Correct 478 ms 69380 KB Output is correct
68 Correct 358 ms 42624 KB Output is correct
69 Correct 1285 ms 104912 KB Output is correct
70 Correct 865 ms 101164 KB Output is correct
71 Correct 1192 ms 97948 KB Output is correct
72 Correct 462 ms 56752 KB Output is correct
73 Correct 1041 ms 92828 KB Output is correct
74 Correct 390 ms 53608 KB Output is correct
75 Correct 354 ms 53024 KB Output is correct
76 Correct 452 ms 56592 KB Output is correct
77 Correct 467 ms 60576 KB Output is correct
78 Correct 391 ms 51284 KB Output is correct
79 Correct 290 ms 45260 KB Output is correct
80 Correct 314 ms 46372 KB Output is correct
81 Correct 540 ms 53872 KB Output is correct
82 Correct 356 ms 46552 KB Output is correct
83 Correct 322 ms 45660 KB Output is correct
84 Correct 123 ms 13784 KB Output is correct
85 Correct 1057 ms 96400 KB Output is correct
86 Correct 1557 ms 121308 KB Output is correct
87 Correct 66 ms 15108 KB Output is correct
88 Correct 85 ms 15456 KB Output is correct
89 Correct 61 ms 15196 KB Output is correct
90 Correct 27 ms 5916 KB Output is correct
91 Correct 2 ms 468 KB Output is correct
92 Correct 21 ms 4348 KB Output is correct
93 Correct 333 ms 40808 KB Output is correct
94 Correct 35 ms 9676 KB Output is correct
95 Correct 681 ms 83340 KB Output is correct
96 Correct 574 ms 75132 KB Output is correct
97 Correct 446 ms 54824 KB Output is correct
98 Correct 498 ms 69456 KB Output is correct
99 Correct 1922 ms 146252 KB Output is correct
100 Correct 955 ms 103072 KB Output is correct
101 Correct 1255 ms 112932 KB Output is correct
102 Correct 457 ms 57024 KB Output is correct
103 Correct 355 ms 53360 KB Output is correct
104 Correct 345 ms 52060 KB Output is correct
105 Correct 453 ms 56484 KB Output is correct
106 Correct 397 ms 51880 KB Output is correct
107 Correct 422 ms 49564 KB Output is correct
108 Correct 41 ms 8132 KB Output is correct
109 Correct 777 ms 80452 KB Output is correct
110 Correct 808 ms 100756 KB Output is correct
111 Correct 762 ms 100572 KB Output is correct
112 Correct 438 ms 59444 KB Output is correct
113 Correct 399 ms 55648 KB Output is correct