oj.uz

Submission #992355

# Submission time Handle Problem Language Result Execution time Memory
992355 2024-06-04T10:04:44 Z amine_aroua Sky Walking (IOI19_walk) C++17
10 / 100
 4000 ms 918024 KB 
#include <cstdio>
#include <cassert>
//#pragma GCC optimize("O3")
//#pragma GCC optimize("unroll-loops")
#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
using namespace std;
#define Int long long
#define pb push_back
#define fore(i , m) for(int i = 0 ; i < m ; i++)
#define forn(i , x , y) for(int i = x ; i >= y;i--)
#define forr(i , x , y) for(int i = x ; i <= y; i++)
struct chash {
    Int operator()(pair<Int ,Int> x) const { return x.first* 31ll + x.second; }
};
const Int INF = 1e18;

Int min_distance(vector<int> x, vector<int> h , vector<int> l , vector<int> r , vector<int> y , int s , int g)
{
    int m = (Int)l.size();
    int n = (Int)x.size();
    map<Int , Int> degs[n];
    vector<tuple<Int ,Int,Int>> lines;
    fore(i , m)
    {
        lines.pb({y[i] , l[i] , r[i]});
    }
    sort(lines.begin() , lines.end());
    map<pair<Int ,Int> , vector<pair<pair<Int , Int> , Int>> > adj;
    fore(i , n)
    {
        degs[i][0] = i;
    }
    vector<Int> mxR(n , 0);
    for(auto [Y , L , R] : lines)
    {
        forr(i , L , R)
        {
            if(h[i]>= Y)
            {
                degs[i][Y] = max(degs[i][Y] , R);
                mxR[i] = max(mxR[i] , R);
            }
        }
    }
    map<pair<Int , Int> , Int > dist;
    fore(i , n)
    {
        if(degs[i].empty())
        {
            return -1ll;
        }
        for(auto it = degs[i].begin() ; it != (degs[i].end()) ; it++)
        {
            auto [Y , R] = *it;
            dist[{i , Y}] = INF;
            if(Y != 0)
            {
                forr(j , i + 1 , R)
                {
                    if(h[j] >= Y)
                    {
                        adj[{i , Y}].pb({{j , Y} , x[j] - x[i]});
                        adj[{j , Y}].pb({{i , Y} , x[j] - x[i]});
                        break;
                    }
                }
            }
            if(it == prev(degs[i].end()))
                break;
            auto [nY , nR] = *next(it);
            adj[{i , Y}].pb({{i , nY} , nY - Y});
            adj[{i , nY}].pb({{i , Y} , nY - Y});
        }
    }
    priority_queue<pair<Int , pair<Int , Int>>> pq;
    pq.push({0 , {s , 0}});
    map<pair<Int , Int> , Int > vis;
    dist[{s , 0}] = 0;
    while(!pq.empty())
    {
        auto tp = pq.top();
        pq.pop();
        if(vis[tp.second] == 1)
            continue;
        vis[tp.second] = 1;
        auto [i , Y] = tp.second;
        for(auto p : adj[{i , Y}])
        {
            Int w = p.second;
            auto [j , nY] = p.first;
            if(dist[{j , nY}] > dist[{i , Y}] + w)
            {
                pq.push({-dist[{i , Y}] - w , {j , nY}});
                dist[{j , nY}] = w + dist[{i , Y}];
            }
        }
    }
    if(dist[{g , 0}] >= INF)
    {
        return -1ll;
    }
    return dist[{g , 0}];
}
//signed main() {
//    int n, m;
//    assert(2 == scanf("%d%d", &n, &m));
//    vector<int> x(n), h(n);
//    for (int i = 0; i < n; i++)
//        assert(2 == scanf("%d%d", &x[i], &h[i]));
//    vector<int> l(m), r(m), y(m);
//    for (int i = 0; i < m; i++)
//        assert(3 == scanf("%d%d%d", &l[i], &r[i], &y[i]));
//    int s, g;
//    assert(2 == scanf("%d%d", &s, &g));
//    fclose(stdin);
//
//    long long result = min_distance(x, h, l, r, y, s, g);
//
//    printf("%lld\n", result);
//    fclose(stdout);
//    return 0;
//}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 432 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 692 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 1 ms 604 KB Output is correct
9 Correct 1 ms 436 KB Output is correct
10 Correct 2 ms 604 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 600 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 2 ms 604 KB Output is correct

Subtask #2
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 2583 ms 274380 KB Output is correct
4 Correct 1819 ms 307388 KB Output is correct
5 Correct 750 ms 225008 KB Output is correct
6 Correct 1265 ms 199620 KB Output is correct
7 Correct 767 ms 224540 KB Output is correct
8 Correct 3418 ms 349644 KB Output is correct
9 Correct 960 ms 226740 KB Output is correct
10 Correct 2879 ms 420292 KB Output is correct
11 Correct 924 ms 152772 KB Output is correct
12 Correct 437 ms 116932 KB Output is correct
13 Correct 2244 ms 369604 KB Output is correct
14 Correct 3302 ms 93508 KB Output is correct
15 Correct 2140 ms 115652 KB Output is correct
16 Correct 570 ms 116672 KB Output is correct
17 Correct 591 ms 112840 KB Output is correct
18 Execution timed out 4042 ms 27908 KB Time limit exceeded
19 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 99 ms 29412 KB Output is correct
2 Execution timed out 4061 ms 918024 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 99 ms 29412 KB Output is correct
2 Execution timed out 4061 ms 918024 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 432 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 692 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 1 ms 604 KB Output is correct
9 Correct 1 ms 436 KB Output is correct
10 Correct 2 ms 604 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 600 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 2 ms 604 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 2583 ms 274380 KB Output is correct
21 Correct 1819 ms 307388 KB Output is correct
22 Correct 750 ms 225008 KB Output is correct
23 Correct 1265 ms 199620 KB Output is correct
24 Correct 767 ms 224540 KB Output is correct
25 Correct 3418 ms 349644 KB Output is correct
26 Correct 960 ms 226740 KB Output is correct
27 Correct 2879 ms 420292 KB Output is correct
28 Correct 924 ms 152772 KB Output is correct
29 Correct 437 ms 116932 KB Output is correct
30 Correct 2244 ms 369604 KB Output is correct
31 Correct 3302 ms 93508 KB Output is correct
32 Correct 2140 ms 115652 KB Output is correct
33 Correct 570 ms 116672 KB Output is correct
34 Correct 591 ms 112840 KB Output is correct
35 Execution timed out 4042 ms 27908 KB Time limit exceeded
36 Halted 0 ms 0 KB -