oj.uz

답안 #1101577

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1101577 2024-10-16T10:57:59 Z MMihalev Simurgh (IOI17_simurgh) C++14
49 / 100
 3000 ms 5880 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];
int numedge[MAX_N][MAX_N];

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


bool mm[MAX_N];
bool uu[MAX_N];
int pre[MAX_N];
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]])
        {
            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;}
    }
}
vector<pair<int,int>>s;
int rec(int l,int r)
{
    if(l==r)
    {
        return s[l].first;
    }

    int mid=(l+r)/2;

    int bonus=0;
    edges.clear();
    for(int i=0;i<n;i++)used[i]=0;

    for(int i=l;i<=mid;i++)
    {
        edges.push_back(s[i].first);
        used[s[i].second]=1;
    }

    for(int i=1;i<n;i++)
    {
        if(!used[i]){bonus+=stat[numedge[0][i]];edges.push_back(numedge[0][i]);}
    }

    int cnt=count_common_roads(edges)-bonus;q++;

    if(cnt>0)return rec(l,mid);
    return rec(mid+1,r);
}
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<m;i++)
    {
        g[u[i]].push_back({v[i],i});
        g[v[i]].push_back({u[i],i});
        numedge[u[i]][v[i]]=i;
        numedge[v[i]][u[i]]=i;
    }

    set<pair<int,int>>so;
    for(int i=0;i<n;i++)
    {
        so.insert({g[i].size(),i});
        pre[i]=g[i].size();
    }

    int cc=0;
    while(so.size()>0)
    {
        auto f=(*(so.rbegin()));
        so.erase(f);
        int u=f.second;

        cc++;
        mm[u]=1;
        for(auto [v,edge]:g[u])uu[v]=1;

        for(int i=0;i<n;i++)
        {
            if(mm[i])continue;
            int npre=0;
            for(auto [v,edge]:g[i])
            {
                if(uu[v] or mm[v])continue;

                npre++;
            }
            so.erase({pre[i],i});
            pre[i]=npre;
            so.insert({pre[i],i});
        }

        bool bad=0;
        for(int i=0;i<n;i++)
        {
            if(mm[i])continue;
            if(uu[i])continue;
            bad=1;
            break;
        }
        if(bad==0)
        {
            if(cc>50)while(1);
            break;
        }
    }



    if(m!=n*(n-1)/2)
    {
        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)
            {
                int ma=count_common_roads(edges);q++;
                vector<int>marked;
                marked.push_back(c[0]);
                int prev=c[0];
                int sega=0;

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

                    rep(prev,edge);

                    int cur=count_common_roads(edges);q++;
                    if(cur>ma)
                    {
                        sega++;
                        marked.clear();
                        ma=cur;
                        marked.push_back(edge);
                        if(sega==2)break;
                    }
                    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;
        }

    }
    else
    {
        for(int u=0;u<n;u++)
        {
            if(u==0)
            {
                vector<int>marked;
                edges.clear();
                for(int v=2;v<n;v++)
                {
                    edges.push_back(numedge[v-1][v]);
                }

                int ma=-1;

                for(auto [v,edge]:g[u])
                {
                    edges.push_back(edge);
                    int cur=count_common_roads(edges);q++;
                    edges.pop_back();

                    if(cur>ma)
                    {
                        marked.clear();
                        marked.push_back(edge);
                        ma=cur;
                    }
                    else if(cur==ma)marked.push_back(edge);
                }

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

                continue;
            }


            while(1)
            {
                int bonus=0;
                edges.clear();
                s.clear();
                for(int i=0;i<n;i++)used[i]=0;

                for(auto [v,edge]:g[u])
                {
                    if(stat[edge] or v==0)continue;
                    edges.push_back(edge);
                    s.push_back({edge,v});
                    used[v]=1;
                }

                for(int i=1;i<n;i++)
                {
                    if(!used[i]){bonus+=stat[numedge[0][i]];edges.push_back(numedge[0][i]);}
                }

                int cur=count_common_roads(edges)-bonus;q++;

                if(cur==0)break;

                int edge=rec(0,s.size()-1);
                stat[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:48:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   48 |     for(auto [v,edge]:g[u])
      |              ^
simurgh.cpp: In function 'void rep(int, int)':
simurgh.cpp:57:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   57 |     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:122:18: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
  122 |         for(auto [v,edge]:g[u])uu[v]=1;
      |                  ^
simurgh.cpp:128:22: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
  128 |             for(auto [v,edge]:g[i])
      |                      ^
simurgh.cpp:162:22: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
  162 |             for(auto [v,edge]:g[u])
      |                      ^
simurgh.cpp:166:22: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
  166 |             for(auto [v,edge]:g[u])
      |                      ^
simurgh.cpp:220:22: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
  220 |             for(auto [v,edge]:g[u])checked[edge]=1;
      |                      ^
simurgh.cpp:239:26: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
  239 |                 for(auto [v,edge]:g[u])
      |                          ^
simurgh.cpp:267:26: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
  267 |                 for(auto [v,edge]:g[u])
      |                          ^

Subtask #1
13.0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 336 KB correct
2 Correct 1 ms 336 KB correct
3 Correct 1 ms 504 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 336 KB correct

Subtask #2
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 336 KB correct
2 Correct 1 ms 336 KB correct
3 Correct 1 ms 504 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 336 KB correct
14 Correct 2 ms 592 KB correct
15 Correct 1 ms 592 KB correct
16 Correct 2 ms 592 KB correct
17 Correct 2 ms 592 KB correct
18 Correct 1 ms 592 KB correct
19 Correct 2 ms 592 KB correct
20 Correct 2 ms 624 KB correct
21 Correct 2 ms 592 KB correct
22 Correct 1 ms 592 KB correct
23 Correct 2 ms 592 KB correct
24 Correct 2 ms 592 KB correct
25 Correct 1 ms 336 KB correct
26 Correct 1 ms 592 KB correct
27 Correct 1 ms 592 KB correct
28 Correct 1 ms 336 KB correct
29 Correct 1 ms 504 KB correct
30 Correct 1 ms 592 KB correct
31 Correct 1 ms 592 KB correct
32 Correct 1 ms 592 KB correct
33 Correct 2 ms 764 KB correct

Subtask #3
0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 336 KB correct
2 Correct 1 ms 336 KB correct
3 Correct 1 ms 504 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 336 KB correct
14 Correct 2 ms 592 KB correct
15 Correct 1 ms 592 KB correct
16 Correct 2 ms 592 KB correct
17 Correct 2 ms 592 KB correct
18 Correct 1 ms 592 KB correct
19 Correct 2 ms 592 KB correct
20 Correct 2 ms 624 KB correct
21 Correct 2 ms 592 KB correct
22 Correct 1 ms 592 KB correct
23 Correct 2 ms 592 KB correct
24 Correct 2 ms 592 KB correct
25 Correct 1 ms 336 KB correct
26 Correct 1 ms 592 KB correct
27 Correct 1 ms 592 KB correct
28 Correct 1 ms 336 KB correct
29 Correct 1 ms 504 KB correct
30 Correct 1 ms 592 KB correct
31 Correct 1 ms 592 KB correct
32 Correct 1 ms 592 KB correct
33 Correct 2 ms 764 KB correct
34 Correct 14 ms 1872 KB correct
35 Correct 92 ms 2004 KB correct
36 Correct 61 ms 1616 KB correct
37 Correct 8 ms 848 KB correct
38 Correct 89 ms 1968 KB correct
39 Correct 76 ms 1872 KB correct
40 Correct 61 ms 1684 KB correct
41 Correct 15 ms 2040 KB correct
42 Correct 90 ms 2012 KB correct
43 Correct 50 ms 1616 KB correct
44 Correct 40 ms 1360 KB correct
45 Correct 46 ms 1376 KB correct
46 Correct 36 ms 1400 KB correct
47 Correct 18 ms 1104 KB correct
48 Execution timed out 3063 ms 1016 KB Time limit exceeded
49 Halted 0 ms 0 KB -

Subtask #4
19.0 / 19.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 336 KB correct
2 Correct 1 ms 336 KB correct
3 Correct 39 ms 4344 KB correct
4 Correct 61 ms 5712 KB correct
5 Correct 63 ms 5712 KB correct
6 Correct 60 ms 5712 KB correct
7 Correct 56 ms 5712 KB correct
8 Correct 56 ms 5724 KB correct
9 Correct 61 ms 5712 KB correct
10 Correct 63 ms 5716 KB correct
11 Correct 61 ms 5704 KB correct
12 Correct 65 ms 5880 KB correct
13 Correct 1 ms 336 KB correct
14 Correct 64 ms 5800 KB correct
15 Correct 64 ms 5704 KB correct

Subtask #5
0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 336 KB correct
2 Correct 1 ms 336 KB correct
3 Correct 1 ms 504 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 336 KB correct
14 Correct 2 ms 592 KB correct
15 Correct 1 ms 592 KB correct
16 Correct 2 ms 592 KB correct
17 Correct 2 ms 592 KB correct
18 Correct 1 ms 592 KB correct
19 Correct 2 ms 592 KB correct
20 Correct 2 ms 624 KB correct
21 Correct 2 ms 592 KB correct
22 Correct 1 ms 592 KB correct
23 Correct 2 ms 592 KB correct
24 Correct 2 ms 592 KB correct
25 Correct 1 ms 336 KB correct
26 Correct 1 ms 592 KB correct
27 Correct 1 ms 592 KB correct
28 Correct 1 ms 336 KB correct
29 Correct 1 ms 504 KB correct
30 Correct 1 ms 592 KB correct
31 Correct 1 ms 592 KB correct
32 Correct 1 ms 592 KB correct
33 Correct 2 ms 764 KB correct
34 Correct 14 ms 1872 KB correct
35 Correct 92 ms 2004 KB correct
36 Correct 61 ms 1616 KB correct
37 Correct 8 ms 848 KB correct
38 Correct 89 ms 1968 KB correct
39 Correct 76 ms 1872 KB correct
40 Correct 61 ms 1684 KB correct
41 Correct 15 ms 2040 KB correct
42 Correct 90 ms 2012 KB correct
43 Correct 50 ms 1616 KB correct
44 Correct 40 ms 1360 KB correct
45 Correct 46 ms 1376 KB correct
46 Correct 36 ms 1400 KB correct
47 Correct 18 ms 1104 KB correct
48 Execution timed out 3063 ms 1016 KB Time limit exceeded
49 Halted 0 ms 0 KB -