Submission #993451

#	Time	Username	Problem	Language	Result	Execution time	Memory
993451		AndrijaM	Global Warming (NOI13_gw)	C++14	0 / 40	484 ms	65536 KiB

gw

#include <bits/stdc++.h>

using namespace std;

#define int long long

const int maxn=1e6+10;
const int mod=1e9+7;

map<int,vector<int>>pos;

signed main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);
    ///freopen("prieteni.in","r",stdin);
    ///freopen("prieteni.out","w",stdout);
    int n;
    cin>>n;
    int x[n];
    vector<int>v;

    for(int i=0;i<n;i++)
    {
        cin>>x[i];
        v.push_back(x[i]);
        pos[x[i]].push_back(i);
    }
    sort(v.begin(),v.end());
    auto it=unique(v.begin(),v.end());
    v.resize(distance(v.begin(),it));
    bool vis[n];
    memset(vis,0,sizeof vis);
    int ans=1;
    int sum=1;
    for(int i=0;i<v.size();i++)
    {
        int koj=v[i];
        for(auto idx:pos[koj])
        {
            if(idx==0 || idx==n-1)
            {
                sum--;
                vis[idx]=1;
                continue;
            }
            if(vis[idx-1]==0 && vis[idx+1]==0)
            {
                sum++;
                vis[idx]=1;
                continue;
            }
            if(vis[idx-1]==1 && vis[idx+1]==1)
            {
                sum--;
                vis[idx]=1;
                continue;
            }
            vis[idx]=1;
        }
        ans=max(ans,sum);
    }
    cout<<ans<<endl;
    return 0;
}

Compilation message (stderr)

gw.cpp: In function 'int main()':
gw.cpp:36:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |     for(int i=0;i<v.size();i++)
      |                 ~^~~~~~~~~

• Subtask 1: 0 / 6
• Subtask 2: 0 / 6
• Subtask 3: 0 / 7
• Subtask 4: 0 / 10
• Subtask 5: 0 / 11