oj.uz

Submission #1036580

# Submission time Handle Problem Language Result Execution time Memory
1036580 2024-07-27T14:27:53 Z Itamar Sky Walking (IOI19_walk) C++14
0 / 100
 4000 ms 242352 KB 
using namespace std;
#include<bits/stdc++.h>
#define ll long long
#define vll vector<ll>
#define pll pair<ll,ll>
#define pi pair<int,int>
#define vi vector<int>
long long min_distance(std::vector<int> x, std::vector<int> h, std::vector<int> l, std::vector<int> r, std::vector<int> y, int s, int g) {
	int n = x.size(), m = l.size();
    multiset<pi> poi;
    vector<vector<pi>> ins(2e5+2);
    vector<vector<pi>> rem(2e5+2);
    for(int i = 0; i < m; i++){
        ins[l[i]].push_back({y[i],i});
        rem[r[i]].push_back({y[i],i});
    }
    map<pi,vector<pi>> fr;
    map<int,int> prev;
    for(int i = 0; i < n; i++){
        for(pi hei : ins[i])poi.insert(hei);
        pi bel = {x[i],0};
        auto it = poi.begin();
        while(it!=poi.end() && (*it).first <= h[i]){
            int cur = (*it).first;
            pi p = {x[i],cur};
            fr[p].push_back(bel);
            fr[bel].push_back(p);
            if(l[(*it).second]!=i){
                fr[p].push_back({prev[cur],cur});
                fr[{prev[cur],cur}].push_back(p);
            }
            prev[cur]=x[i];
            bel = p;
            it++;
        }
        for(pi hei : rem[i])poi.erase(poi.find(hei));
    }
    map<pi,ll> dp;
    for(auto[u,v] : fr){
        dp[u]=1e18;
    }
    dp[{x[s],0}]=0;
    set<pair<ll,pi>> se;
    map<pi,bool> vis;
    se.insert({0,{x[s],0}});
    while(!se.empty()){
        pair<ll,pi> p = *se.begin();
        pi q = p.second;
        se.erase(se.begin());
        if(vis[q])continue;
        vis[q]=1;
        for(pi f : fr[q]){
            ll w = dp[q] + (abs(f.first-q.first)+abs(f.second-q.second));
            dp[f] = min(dp[f],w);
            se.insert({w,f});
        }
    }
    if(dp[{x[g],0}]==1e18)return -1;
    return dp[{x[g],0}];
}

Compilation message

walk.cpp: In function 'long long int min_distance(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>, int, int)':
walk.cpp:39:13: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   39 |     for(auto[u,v] : fr){
      |             ^

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 9820 KB Output is correct
2 Correct 4 ms 9820 KB Output is correct
3 Incorrect 4 ms 9820 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #2
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 9816 KB Output is correct
2 Correct 4 ms 9820 KB Output is correct
3 Correct 3503 ms 198996 KB Output is correct
4 Correct 2464 ms 225980 KB Output is correct
5 Correct 734 ms 153284 KB Output is correct
6 Correct 686 ms 138040 KB Output is correct
7 Correct 737 ms 153428 KB Output is correct
8 Execution timed out 4078 ms 242352 KB Time limit exceeded
9 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 65 ms 27984 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Incorrect 65 ms 27984 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 9820 KB Output is correct
2 Correct 4 ms 9820 KB Output is correct
3 Incorrect 4 ms 9820 KB Output isn't correct
4 Halted 0 ms 0 KB -