Submission #472296

#	Time	Username	Problem	Language	Result	Execution time	Memory
472296		morasha3	Political Development (BOI17_politicaldevelopment)	C++17	4 / 100	3084 ms	277008 KiB

politicaldevelopment

#include<bits/stdc++.h>
typedef long long ll;
const ll mod = (ll) 1e9 + 7;
const ll mx = (ll) 1e5 +7;
using namespace std;

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    ll n,k,ans=0;
    cin>>n>>k;
    vector<vector<ll>>v(n);
    map<pair<ll,ll>,ll>m;
    bool r=0;
    for(int i=0; i<n; i++)
    {
        ll a;
        cin>>a;
        for(int j=0; j<a; j++)
        {
            ll b;
            cin>>b;
            v[i].push_back(b);
            m[ {i,b}]=1;
            m[ {b,i}]=1;
            ans=2;
            r=1;
        }
    }
    for(int i=0; i<n; i++)
    { vector<ll>e;
        for(int j=0; j<v[i].size(); j++)
        {
           ll cnt=1;
                bool f=1;
            for(int h=0; h<e.size(); h++)
            {
                if(m[ {v[i][j],e[h]}]==1||m[ {e[h],v[i][j]}]==1)
                {
                    if(f)
                    {
                        cnt++;
                        f=0;
                    }
                    cnt++;
                    if(cnt>=k)break;
                }
            }
            e.push_back(v[i][j]);
            ans=max(ans,cnt);
            if(cnt>=k)break;
        }
        if(ans>=k)break;
    }
    if(ans>k)ans=k;
    if(k==1)ans=1;
    if(k==2&&r==1)ans=2;
    else if(r==0&&k==2)ans=1;
    if(ans==0)ans=1;
    cout<<ans;
}

Compilation message (stderr)

politicaldevelopment.cpp: In function 'int main()':
politicaldevelopment.cpp:33:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   33 |         for(int j=0; j<v[i].size(); j++)
      |                      ~^~~~~~~~~~~~
politicaldevelopment.cpp:37:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 |             for(int h=0; h<e.size(); h++)
      |                          ~^~~~~~~~~

• Subtask 1: 4 / 4
• Subtask 2: 0 / 12
• Subtask 3: 0 / 23
• Subtask 4: 0 / 38
• Subtask 5: 0 / 23