Submission #132666

#	Time	Username	Problem	Language	Result	Execution time	Memory
132666		Vardanyan	Teams (CEOI11_tea)	C++14	80 / 100	2549 ms	71880 KiB

tea

#include <bits/stdc++.h>
using namespace std;
const int N = 1000*1000+5;
pair<int,int> a[N];
int dp[5005][5005];
int tsnox[5005][5005];
int main(){
    ios_base::sync_with_stdio(false);
    int n;
    cin>>n;
    for(int i = 1;i<=n;i++){
        cin>>a[i].first;
       // a[i].first = rand()%4+1;
        a[i].second = i;
    }
    sort(a+1,a+1+n);
    if(n<=300){
        int mx = 0;
        for(int i = n;i>=1;i--){
            mx = max(mx,a[i].first);
            if((n-i+1)>=mx){
                dp[i][1] = n-i+1;
                tsnox[i][1] = n;
            }
        }
        int anss = 1;
        for(int k = 2;k<=n;k++){

            for(int i = n;i>=1;i--){
                int mx = 0;
                /*if(i == 2){
                    cout<<0<<endl;
                }*/
                for(int j = i;j<=n;j++){
                    mx = max(mx,a[j].first);
                    if(dp[j+1][k-1] && (j-i+1)>=mx){
                     //   dp[i][k] = 1;
                        if(dp[i][k] == 0 || dp[i][k]>max(dp[j+1][k-1],j-i+1)){
                            dp[i][k] = max(dp[j+1][k-1],j-i+1);
                            tsnox[i][k] = j;
                        }
                      //  break;
                    }
                }
            }
            if(!dp[1][k]) break;
            anss = k;
        }
        cout<<anss<<endl;
        int l = 1;
        int k = anss;
        while(1){
            int r = tsnox[l][k];
            cout<<r-l+1<<" ";
            for(int i = l;i<=r;i++){
                cout<<a[i].second<<" ";
            }
            cout<<endl;
            l = r+1;
            if(l>n) break;
            k--;
        }
      return 0;
    }
 //   cout<<dp[2][2]<<endl;
 //   return 0;
//    cout<<anss<<" "<<dp[1][anss]<<endl;
    vector<vector<int> > ans;
    vector<int> now;
    int lim = n+1;
    for(int i = n;i>=1;i--){
        if(i>=lim){
            now.push_back(a[i].second);
            continue;
        }
        if(now.size()) ans.push_back(now);
        now.clear();
     //   lim = i-a[i].first+1;
        if(i-a[i].first+1<=0){
       //     now.push_back(a[i].second);
            int id = 0;
            for(int j = 0;j<ans.size();j++){
                if(ans[id].size()>ans[j].size()) id = j;
            }
            ans[id].push_back(a[i].second);
            continue;
        }
      //  if(now.size()) ans.push_back(now);
      //  now.clear();
        lim = i-a[i].first+1;
        now.push_back(a[i].second);
    }
    if(now.size()) ans.push_back(now);
 //   if(anss!=ans.size()) assert(0);
    cout<<ans.size()<<endl;
    int mxx = 0;
    long long al = 0;
    for(int i = 0;i<ans.size();i++){
            mxx = max(mxx,(int)ans[i].size());
            cout<<ans[i].size()<<" ";
            al+=ans[i].size();
        for(int j = 0;j<ans[i].size();j++) cout<<ans[i][j]<<" ";
        cout<<endl;
    }
  //  cout<<mxx<<endl;
  //  cout<<al<<endl;*/
    return 0;
}

Compilation message (stderr)

tea.cpp: In function 'int main()':
tea.cpp:82:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             for(int j = 0;j<ans.size();j++){
                           ~^~~~~~~~~~~
tea.cpp:98:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i = 0;i<ans.size();i++){
                   ~^~~~~~~~~~~
tea.cpp:102:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int j = 0;j<ans[i].size();j++) cout<<ans[i][j]<<" ";
                       ~^~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 0 / 10
• Subtask 5: 10 / 10
• Subtask 6: 10 / 10
• Subtask 7: 10 / 10
• Subtask 8: 10 / 10
• Subtask 9: 0 / 10
• Subtask 10: 10 / 10