oj.uz

Submission #832498

# Submission time Handle Problem Language Result Execution time Memory
832498 2023-08-21T10:55:57 Z maomao90 Sky Walking (IOI19_walk) C++17
10 / 100
 4000 ms 359964 KB 
// I can do all things through Christ who strenghthens me
// Philippians 4:13

#include "bits/stdc++.h"
#include "walk.h"
using namespace std;

#define REP(i, j, k) for (int i = j; i < (k); i++)
#define RREP(i, j, k) for (int i = j; i >= (k); i--)

template <class T>
inline bool mnto(T &a, const T b) {return a > b ? a = b, 1 : 0;}
template <class T>
inline bool mxto(T &a, const T b) {return a < b ? a = b, 1 : 0;}

typedef long long ll;
typedef long double ld;
#define FI first
#define SE second
typedef pair<int, int> ii;
typedef pair<ll, ll> pll;
#define ALL(x) x.begin(), x.end()
#define SZ(x) (int) x.size()
#define pb push_back
typedef vector<int> vi;
typedef vector<ii> vii;
typedef vector<ll> vll;
typedef tuple<int, int, int> iii;
typedef tuple<ll, int, int> lll;
typedef vector<iii> viii;

#ifndef DEBUG
#define cerr if (0) cerr
#endif

const int INF = 1000000005;
const ll LINF = 1000000000000000005;
const int MAXN = 100005;

int n, m;
vi vy[MAXN];
unordered_map<int, int> mp[MAXN];
vll d[MAXN];
vi prv[MAXN], nxt[MAXN];
priority_queue<lll, vector<lll>, greater<lll>> pq;

ll min_distance(vi x, vi h, vi l, vi r, vi y, int s, int g) {
    n = SZ(x), m = SZ(l);
    REP (i, 0, m) {
        REP (p, l[i], r[i] + 1) {
            if (h[p] < y[i]) {
                continue;
            }
            vy[p].pb(i);
        }
    }
    REP (i, 0, n) {
        d[i] = vll(SZ(vy[i]), LINF);
        prv[i] = vi(SZ(vy[i]), -1);
        nxt[i] = vi(SZ(vy[i]), INF);
        sort(ALL(vy[i]), [&] (int l, int r) {
                return y[l] < y[r];
                });
        REP (j, 0, SZ(vy[i])) {
            mp[i][y[vy[i][j]]] = j;
        }
    }
    REP (i, 0, m) {
        int tprv = -1;
        REP (p, l[i], r[i] + 1) {
            if (h[p] < y[i]) {
                continue;
            }
            prv[p][mp[p][y[i]]] = tprv;
            if (tprv != -1) {
                nxt[tprv][mp[tprv][y[i]]] = p;
            }
            tprv = p;
        }
    }
    REP (j, 0, SZ(vy[s])) {
        d[s][j] = y[vy[s][j]];
        pq.push({d[s][j], s, j});
    }
    while (!pq.empty()) {
        auto [ud, up, ui] = pq.top(); pq.pop();
        if (ud != d[up][ui]) {
            continue;
        }
        int id = vy[up][ui];
        cerr << up << ' ' << y[id] << ": " << ud << '\n';
        REP (j, max(0, (int) ui - 1), min(SZ(vy[up]), (int) ui + 2)) {
            if (mnto(d[up][j], ud + abs(y[id] - y[vy[up][j]]))) {
                pq.push({d[up][j], up, j});
            }
        }
        REP (p, max(l[id], prv[up][ui]), min(r[id], nxt[up][ui]) + 1) {
            if (h[p] < y[id]) {
                continue;
            }
            int j = mp[p][y[id]];
            /*
            REP (j, 0, SZ(vy[p])) {
                if (y[vy[p][j]] != y[id]) {
                    continue;
                }
                */
                if (mnto(d[p][j], ud + abs(x[p] - x[up]))) {
                    pq.push({d[p][j], p, j});
                }
            //}
        }
    }
    ll ans = LINF;
    REP (j, 0, SZ(vy[g])) {
        mnto(ans, d[g][j] + y[vy[g][j]]);
    }
    if (ans == LINF) {
        return -1;
    }
	return ans;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 15060 KB Output is correct
2 Correct 8 ms 15060 KB Output is correct
3 Correct 10 ms 15172 KB Output is correct
4 Correct 8 ms 15060 KB Output is correct
5 Correct 8 ms 15188 KB Output is correct
6 Correct 7 ms 15188 KB Output is correct
7 Correct 8 ms 15188 KB Output is correct
8 Correct 8 ms 15188 KB Output is correct
9 Correct 8 ms 15184 KB Output is correct
10 Correct 8 ms 15188 KB Output is correct
11 Correct 8 ms 15188 KB Output is correct
12 Correct 8 ms 15188 KB Output is correct
13 Correct 8 ms 15188 KB Output is correct
14 Correct 8 ms 15188 KB Output is correct
15 Correct 8 ms 15188 KB Output is correct
16 Correct 8 ms 15148 KB Output is correct
17 Correct 8 ms 15188 KB Output is correct

Subtask #2
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 15060 KB Output is correct
2 Correct 10 ms 15060 KB Output is correct
3 Correct 549 ms 65048 KB Output is correct
4 Correct 428 ms 73220 KB Output is correct
5 Correct 288 ms 67348 KB Output is correct
6 Correct 1288 ms 63808 KB Output is correct
7 Correct 265 ms 67460 KB Output is correct
8 Correct 766 ms 76744 KB Output is correct
9 Correct 290 ms 65040 KB Output is correct
10 Correct 734 ms 92044 KB Output is correct
11 Correct 217 ms 44528 KB Output is correct
12 Correct 166 ms 49344 KB Output is correct
13 Correct 471 ms 82100 KB Output is correct
14 Execution timed out 4006 ms 48464 KB Time limit exceeded
15 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 41 ms 22972 KB Output is correct
2 Execution timed out 4051 ms 359964 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 41 ms 22972 KB Output is correct
2 Execution timed out 4051 ms 359964 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 15060 KB Output is correct
2 Correct 8 ms 15060 KB Output is correct
3 Correct 10 ms 15172 KB Output is correct
4 Correct 8 ms 15060 KB Output is correct
5 Correct 8 ms 15188 KB Output is correct
6 Correct 7 ms 15188 KB Output is correct
7 Correct 8 ms 15188 KB Output is correct
8 Correct 8 ms 15188 KB Output is correct
9 Correct 8 ms 15184 KB Output is correct
10 Correct 8 ms 15188 KB Output is correct
11 Correct 8 ms 15188 KB Output is correct
12 Correct 8 ms 15188 KB Output is correct
13 Correct 8 ms 15188 KB Output is correct
14 Correct 8 ms 15188 KB Output is correct
15 Correct 8 ms 15188 KB Output is correct
16 Correct 8 ms 15148 KB Output is correct
17 Correct 8 ms 15188 KB Output is correct
18 Correct 8 ms 15060 KB Output is correct
19 Correct 10 ms 15060 KB Output is correct
20 Correct 549 ms 65048 KB Output is correct
21 Correct 428 ms 73220 KB Output is correct
22 Correct 288 ms 67348 KB Output is correct
23 Correct 1288 ms 63808 KB Output is correct
24 Correct 265 ms 67460 KB Output is correct
25 Correct 766 ms 76744 KB Output is correct
26 Correct 290 ms 65040 KB Output is correct
27 Correct 734 ms 92044 KB Output is correct
28 Correct 217 ms 44528 KB Output is correct
29 Correct 166 ms 49344 KB Output is correct
30 Correct 471 ms 82100 KB Output is correct
31 Execution timed out 4006 ms 48464 KB Time limit exceeded
32 Halted 0 ms 0 KB -