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Submission #1100248

# Submission time Handle Problem Language Result Execution time Memory
1100248 2024-10-13T10:49:57 Z MMihalev Simurgh (IOI17_simurgh) C++14
51 / 100
 100 ms 3668 KB 
#include<iostream>
#include<algorithm>
#include<set>
#include<queue>
#include "simurgh.h"
using namespace std;
const int MAX_N=5e2+3;
const int MAX_M=125000;
int n,m;
int q;
vector<int>edges;
vector<pair<int,int>>g[MAX_N];
bool used[MAX_N];
vector<int>comp;
vector<vector<int>>comps;
int adj[MAX_N];

bool stat[MAX_M];
bool checked[MAX_M];
int forsure;

void reset()
{
    comps.clear();
    edges.clear();
    for(int i=0;i<n;i++)
    {
        adj[i]=-1;
        used[i]=0;
    }
}
void dfs(int u)
{
    if(adj[u]!=-1)
    {
        if(!checked[adj[u]])
        {
            if(stat[adj[u]])while(1);
            comp.push_back(adj[u]);
        }
        if(stat[adj[u]])forsure=adj[u];
    }
    used[u]=1;
    for(auto [v,edge]:g[u])
    {
        if(used[v])continue;
        edges.push_back(edge);
        dfs(v);
    }
}
void rep(int prev,int edge)
{
    for(int i=0;i<edges.size();i++)
    {
        if(edges[i]==prev){edges[i]=edge;return;}
    }
    while(1);
}
vector<int> find_roads(int N, vector<int> u, vector<int> v)
{
    n=N;
    m=u.size();

    vector<int>ans;
    //for(int i=0;i<n;i++)g[i].clear();
    for(int i=0;i<m;i++)
    {
        //stat[i]=0;
        //checked[i]=0;
        g[u[i]].push_back({v[i],i});
        g[v[i]].push_back({u[i],i});
    }

    for(int u=0;u<n;u++)
    {
        reset();
        used[u]=1;
        for(auto [v,edge]:g[u])
        {
            adj[v]=edge;
        }
        for(auto [v,edge]:g[u])
        {
            if(!used[v])
            {
                forsure=-1;
                comp.clear();
                dfs(v);
                if(forsure!=-1)
                {
                    comp.push_back(forsure);
                }
                comps.push_back(comp);
            }
        }

        for(auto c:comps)
        {
            edges.push_back(c[0]);
        }

        for(auto c:comps)
        {
            if(q==30000)while(1);
            if(edges.size()!=n-1)while(1);

            int ma=count_common_roads(edges);q++;
            vector<int>marked;
            marked.push_back(c[0]);
            int prev=c[0];

            for(int edge:c)
            {
                if(edge==c[0])continue;

                rep(prev,edge);

                if(edges.size()!=n-1)while(1);
                if(q==30000)while(1);

                int cur=count_common_roads(edges);q++;
                if(cur>ma)
                {
                    marked.clear();
                    ma=cur;
                    marked.push_back(edge);
                }
                else if(cur==ma)
                {
                    marked.push_back(edge);
                }

                prev=edge;
            }

            for(int edge:marked)stat[edge]=1;
        }

        for(auto [v,edge]:g[u])checked[edge]=1;
    }

    for(int i=0;i<m;i++)
    {
        if(stat[i])ans.push_back(i);
    }

    return ans;
}

Compilation message

simurgh.cpp: In function 'void dfs(int)':
simurgh.cpp:44:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   44 |     for(auto [v,edge]:g[u])
      |              ^
simurgh.cpp: In function 'void rep(int, int)':
simurgh.cpp:53:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   53 |     for(int i=0;i<edges.size();i++)
      |                 ~^~~~~~~~~~~~~
simurgh.cpp: In function 'std::vector<int> find_roads(int, std::vector<int>, std::vector<int>)':
simurgh.cpp:78:18: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   78 |         for(auto [v,edge]:g[u])
      |                  ^
simurgh.cpp:82:18: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   82 |         for(auto [v,edge]:g[u])
      |                  ^
simurgh.cpp:105:28: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  105 |             if(edges.size()!=n-1)while(1);
      |                ~~~~~~~~~~~~^~~~~
simurgh.cpp:118:32: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  118 |                 if(edges.size()!=n-1)while(1);
      |                    ~~~~~~~~~~~~^~~~~
simurgh.cpp:139:18: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
  139 |         for(auto [v,edge]:g[u])checked[edge]=1;
      |                  ^

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB correct
2 Correct 1 ms 336 KB correct
3 Correct 1 ms 336 KB correct
4 Correct 1 ms 336 KB correct
5 Correct 1 ms 336 KB correct
6 Correct 1 ms 336 KB correct
7 Correct 1 ms 336 KB correct
8 Correct 1 ms 336 KB correct
9 Correct 1 ms 336 KB correct
10 Correct 1 ms 336 KB correct
11 Correct 1 ms 336 KB correct
12 Correct 1 ms 336 KB correct
13 Correct 1 ms 404 KB correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB correct
2 Correct 1 ms 336 KB correct
3 Correct 1 ms 336 KB correct
4 Correct 1 ms 336 KB correct
5 Correct 1 ms 336 KB correct
6 Correct 1 ms 336 KB correct
7 Correct 1 ms 336 KB correct
8 Correct 1 ms 336 KB correct
9 Correct 1 ms 336 KB correct
10 Correct 1 ms 336 KB correct
11 Correct 1 ms 336 KB correct
12 Correct 1 ms 336 KB correct
13 Correct 1 ms 404 KB correct
14 Correct 2 ms 336 KB correct
15 Correct 2 ms 336 KB correct
16 Correct 2 ms 516 KB correct
17 Correct 2 ms 336 KB correct
18 Correct 2 ms 336 KB correct
19 Correct 1 ms 336 KB correct
20 Correct 1 ms 336 KB correct
21 Correct 2 ms 336 KB correct
22 Correct 1 ms 336 KB correct
23 Correct 1 ms 336 KB correct
24 Correct 2 ms 336 KB correct
25 Correct 1 ms 508 KB correct
26 Correct 1 ms 336 KB correct
27 Correct 1 ms 336 KB correct
28 Correct 1 ms 336 KB correct
29 Correct 2 ms 336 KB correct
30 Correct 1 ms 336 KB correct
31 Correct 1 ms 336 KB correct
32 Correct 1 ms 336 KB correct
33 Correct 1 ms 336 KB correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB correct
2 Correct 1 ms 336 KB correct
3 Correct 1 ms 336 KB correct
4 Correct 1 ms 336 KB correct
5 Correct 1 ms 336 KB correct
6 Correct 1 ms 336 KB correct
7 Correct 1 ms 336 KB correct
8 Correct 1 ms 336 KB correct
9 Correct 1 ms 336 KB correct
10 Correct 1 ms 336 KB correct
11 Correct 1 ms 336 KB correct
12 Correct 1 ms 336 KB correct
13 Correct 1 ms 404 KB correct
14 Correct 2 ms 336 KB correct
15 Correct 2 ms 336 KB correct
16 Correct 2 ms 516 KB correct
17 Correct 2 ms 336 KB correct
18 Correct 2 ms 336 KB correct
19 Correct 1 ms 336 KB correct
20 Correct 1 ms 336 KB correct
21 Correct 2 ms 336 KB correct
22 Correct 1 ms 336 KB correct
23 Correct 1 ms 336 KB correct
24 Correct 2 ms 336 KB correct
25 Correct 1 ms 508 KB correct
26 Correct 1 ms 336 KB correct
27 Correct 1 ms 336 KB correct
28 Correct 1 ms 336 KB correct
29 Correct 2 ms 336 KB correct
30 Correct 1 ms 336 KB correct
31 Correct 1 ms 336 KB correct
32 Correct 1 ms 336 KB correct
33 Correct 1 ms 336 KB correct
34 Correct 100 ms 1360 KB correct
35 Correct 89 ms 1536 KB correct
36 Correct 63 ms 1360 KB correct
37 Correct 7 ms 336 KB correct
38 Correct 92 ms 1532 KB correct
39 Correct 80 ms 1488 KB correct
40 Correct 66 ms 1360 KB correct
41 Correct 92 ms 1360 KB correct
42 Correct 98 ms 1360 KB correct
43 Correct 52 ms 1108 KB correct
44 Correct 41 ms 964 KB correct
45 Correct 49 ms 848 KB correct
46 Correct 37 ms 848 KB correct
47 Correct 17 ms 592 KB correct
48 Correct 3 ms 336 KB correct
49 Correct 6 ms 336 KB correct
50 Correct 17 ms 592 KB correct
51 Correct 50 ms 848 KB correct
52 Correct 41 ms 848 KB correct
53 Correct 37 ms 848 KB correct
54 Correct 51 ms 1104 KB correct
55 Correct 47 ms 848 KB correct
56 Correct 47 ms 848 KB correct
57 Correct 48 ms 1016 KB correct

Subtask #4
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB correct
2 Correct 1 ms 336 KB correct
3 Incorrect 70 ms 3668 KB WA in grader: NO
4 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB correct
2 Correct 1 ms 336 KB correct
3 Correct 1 ms 336 KB correct
4 Correct 1 ms 336 KB correct
5 Correct 1 ms 336 KB correct
6 Correct 1 ms 336 KB correct
7 Correct 1 ms 336 KB correct
8 Correct 1 ms 336 KB correct
9 Correct 1 ms 336 KB correct
10 Correct 1 ms 336 KB correct
11 Correct 1 ms 336 KB correct
12 Correct 1 ms 336 KB correct
13 Correct 1 ms 404 KB correct
14 Correct 2 ms 336 KB correct
15 Correct 2 ms 336 KB correct
16 Correct 2 ms 516 KB correct
17 Correct 2 ms 336 KB correct
18 Correct 2 ms 336 KB correct
19 Correct 1 ms 336 KB correct
20 Correct 1 ms 336 KB correct
21 Correct 2 ms 336 KB correct
22 Correct 1 ms 336 KB correct
23 Correct 1 ms 336 KB correct
24 Correct 2 ms 336 KB correct
25 Correct 1 ms 508 KB correct
26 Correct 1 ms 336 KB correct
27 Correct 1 ms 336 KB correct
28 Correct 1 ms 336 KB correct
29 Correct 2 ms 336 KB correct
30 Correct 1 ms 336 KB correct
31 Correct 1 ms 336 KB correct
32 Correct 1 ms 336 KB correct
33 Correct 1 ms 336 KB correct
34 Correct 100 ms 1360 KB correct
35 Correct 89 ms 1536 KB correct
36 Correct 63 ms 1360 KB correct
37 Correct 7 ms 336 KB correct
38 Correct 92 ms 1532 KB correct
39 Correct 80 ms 1488 KB correct
40 Correct 66 ms 1360 KB correct
41 Correct 92 ms 1360 KB correct
42 Correct 98 ms 1360 KB correct
43 Correct 52 ms 1108 KB correct
44 Correct 41 ms 964 KB correct
45 Correct 49 ms 848 KB correct
46 Correct 37 ms 848 KB correct
47 Correct 17 ms 592 KB correct
48 Correct 3 ms 336 KB correct
49 Correct 6 ms 336 KB correct
50 Correct 17 ms 592 KB correct
51 Correct 50 ms 848 KB correct
52 Correct 41 ms 848 KB correct
53 Correct 37 ms 848 KB correct
54 Correct 51 ms 1104 KB correct
55 Correct 47 ms 848 KB correct
56 Correct 47 ms 848 KB correct
57 Correct 48 ms 1016 KB correct
58 Correct 1 ms 336 KB correct
59 Correct 1 ms 336 KB correct
60 Incorrect 70 ms 3668 KB WA in grader: NO
61 Halted 0 ms 0 KB -