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Submission #636997

# Submission time Handle Problem Language Result Execution time Memory
636997 2022-08-31T04:18:03 Z ggoh Roller Coaster Railroad (IOI16_railroad) C++14
30 / 100
 89 ms 13352 KB 
#include<bits/stdc++.h>
#include "railroad.h"
using namespace std;
#define sz(v) ((int)(v).size())
typedef long long lint;
typedef pair<int,int> pii;

lint D[1<<16][16];
int v[200002];
int line[200002],to[200002],rev[200002],sT[200002],num[200002],col;
void dfs(int p)
{
    v[p]=col;
    if(!v[sT[to[p]]])dfs(sT[to[p]]);
}
lint plan_roller_coaster(vector<int> s, vector<int> t) {

    int n = (int) s.size();

    int ch=0;
    vector<pii>S;
    vector<pii>T;
    for(int i=0;i<n;i++)S.push_back({s[i],i});
    for(int i=0;i<n;i++)T.push_back({t[i],i});
    S.push_back({1e9+1,n});T.push_back({0,n});

    sort(S.begin(),S.end());
    sort(T.begin(),T.end());
    for(int i=0;i<=n;i++)num[T[i].second]=i;
    int j=0;
    for(int i=0;i<=n;i++)
    {
        while(j<=n && T[i].first>S[j].first)j++;
        line[i]=j;
        if(j>i)
        {
            ch=1;break;
        }
        to[i]=i;rev[i]=i;
        sT[i]=num[S[i].second];
    }
    col=0;
    for(int i=0;i<=n;i++)
    {
        if(!v[i])
        {
            col++;
            dfs(i);
        }
    }
    int real[200002];
    for(int i=1;i<=col;i++)real[i]=i;
    for(int i=0;i<=n;i++)
    {
        if(real[v[i]]!=1)
        {
            if(real[v[line[i]]]!=1)ch=1;
            else real[v[i]]=1;
        }
    }


    return ch;
}

Subtask #1
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1108 KB n = 2
2 Correct 1 ms 1108 KB n = 2
3 Correct 1 ms 1108 KB n = 2
4 Correct 1 ms 1076 KB n = 2
5 Correct 1 ms 1076 KB n = 2
6 Incorrect 1 ms 1108 KB answer is not correct: 1 instead of 523688153
7 Halted 0 ms 0 KB -

Subtask #2
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1108 KB n = 2
2 Correct 1 ms 1108 KB n = 2
3 Correct 1 ms 1108 KB n = 2
4 Correct 1 ms 1076 KB n = 2
5 Correct 1 ms 1076 KB n = 2
6 Incorrect 1 ms 1108 KB answer is not correct: 1 instead of 523688153
7 Halted 0 ms 0 KB -

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 85 ms 13352 KB n = 199999
2 Correct 85 ms 9628 KB n = 199991
3 Correct 77 ms 9532 KB n = 199993
4 Correct 61 ms 9988 KB n = 152076
5 Correct 39 ms 6856 KB n = 93249
6 Correct 79 ms 12616 KB n = 199910
7 Correct 82 ms 12604 KB n = 199999
8 Correct 82 ms 12600 KB n = 199997
9 Correct 76 ms 11144 KB n = 171294
10 Correct 59 ms 9480 KB n = 140872
11 Correct 81 ms 12716 KB n = 199886
12 Correct 85 ms 12592 KB n = 199996
13 Correct 83 ms 12712 KB n = 200000
14 Correct 74 ms 9532 KB n = 199998
15 Correct 76 ms 9532 KB n = 200000
16 Correct 89 ms 9696 KB n = 199998
17 Correct 85 ms 9536 KB n = 200000
18 Correct 78 ms 9148 KB n = 190000
19 Correct 69 ms 11420 KB n = 177777
20 Correct 41 ms 7136 KB n = 100000
21 Correct 82 ms 12660 KB n = 200000
22 Correct 82 ms 12636 KB n = 200000
23 Correct 86 ms 12696 KB n = 200000

Subtask #4
0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1108 KB n = 2
2 Correct 1 ms 1108 KB n = 2
3 Correct 1 ms 1108 KB n = 2
4 Correct 1 ms 1076 KB n = 2
5 Correct 1 ms 1076 KB n = 2
6 Incorrect 1 ms 1108 KB answer is not correct: 1 instead of 523688153
7 Halted 0 ms 0 KB -