oj.uz

Submission #992359

# Submission time Handle Problem Language Result Execution time Memory
992359 2024-06-04T10:09:06 Z amine_aroua Sky Walking (IOI19_walk) C++17
10 / 100
 4000 ms 774344 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;
    }
    for(auto [Y , L , R] : lines)
    {
        forr(i , L , R)
        {
            if(h[i]>= Y)
            {
                degs[i][Y] = max(degs[i][Y] , R);
            }
        }
    }
    map<pair<int , int> , Int > dist;
    fore(i , n)
    {
        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 348 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 604 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 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 604 KB Output is correct

Subtask #2
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 2389 ms 226476 KB Output is correct
4 Correct 1721 ms 256132 KB Output is correct
5 Correct 733 ms 180576 KB Output is correct
6 Correct 1170 ms 160616 KB Output is correct
7 Correct 709 ms 180680 KB Output is correct
8 Correct 3173 ms 288972 KB Output is correct
9 Correct 815 ms 183240 KB Output is correct
10 Correct 2645 ms 350404 KB Output is correct
11 Correct 906 ms 126408 KB Output is correct
12 Correct 454 ms 97852 KB Output is correct
13 Correct 2229 ms 308332 KB Output is correct
14 Correct 2980 ms 75972 KB Output is correct
15 Correct 1837 ms 97796 KB Output is correct
16 Correct 540 ms 98760 KB Output is correct
17 Correct 504 ms 95436 KB Output is correct
18 Execution timed out 4014 ms 20428 KB Time limit exceeded
19 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 95 ms 24236 KB Output is correct
2 Execution timed out 4080 ms 774344 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 95 ms 24236 KB Output is correct
2 Execution timed out 4080 ms 774344 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 348 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 604 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 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 604 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 2389 ms 226476 KB Output is correct
21 Correct 1721 ms 256132 KB Output is correct
22 Correct 733 ms 180576 KB Output is correct
23 Correct 1170 ms 160616 KB Output is correct
24 Correct 709 ms 180680 KB Output is correct
25 Correct 3173 ms 288972 KB Output is correct
26 Correct 815 ms 183240 KB Output is correct
27 Correct 2645 ms 350404 KB Output is correct
28 Correct 906 ms 126408 KB Output is correct
29 Correct 454 ms 97852 KB Output is correct
30 Correct 2229 ms 308332 KB Output is correct
31 Correct 2980 ms 75972 KB Output is correct
32 Correct 1837 ms 97796 KB Output is correct
33 Correct 540 ms 98760 KB Output is correct
34 Correct 504 ms 95436 KB Output is correct
35 Execution timed out 4014 ms 20428 KB Time limit exceeded
36 Halted 0 ms 0 KB -