Submission #166752

#	Time	Username	Problem	Language	Result	Execution time	Memory
166752		theStaticMind	Krov (COCI17_krov)	C++14	70 / 140	1562 ms	16544 KiB

krov

#include<bits/stdc++.h>
#define mp make_pair
#define pb push_back
#define ii pair<int,int>
#define all(x) (x).begin(),(x).end()
#define INF 100000000000000000
#define modulo 1000000007
#define mod 998244353
#define int long long int
using namespace std;
struct Line{
      int M,N;
      int X,Y;
      Line(int a,int b,int c,int d){
            M=a;N=b;X=c;Y=d;
      }
      int get(){
            if(M<0){
                 return M*Y+N;
            }
            else return M*X+N;
      }
};
int32_t main(){
      ios_base::sync_with_stdio(false);
      cin.tie(NULL);
   //   freopen("q.gir","r",stdin);
   //   freopen("q.cik","w",stdout);
      int n,ans=INF;
      cin>>n;
      vector<int>arr(n);
      vector<int>need(n);
      for(int i=0;i<n;i++)cin>>arr[i];
      for(int i=0;i<n;i++)arr[i]--;
      for(int i=0;i<n;i++){
            need[i]=i;
      }
      for(int i=n-1;i>=0;i--){
            map<int,int>critic;
            int mn=max((int)0,-(i-(n-i-1))),sum=0;
            for(int j=0;j<n;j++){
                  critic[arr[j]-need[j]]++;
                  sum-=need[j]-arr[j];
            }
            int m=-n;
            vector<Line> data;
            map<int,int>::iterator pre=critic.begin(),curr;
            curr=pre;
            curr++;
            if(pre->first>=mn)data.pb(Line(m,sum,max((int)mn,(int)-INF),pre->first));
            m+=2*pre->second;
            sum-=2*pre->second*pre->first;
            while(curr!=critic.end()){
                  if(curr->first>=mn)data.pb(Line(m,sum,max(mn,pre->first),curr->first));
                  m+=2*curr->second;
                  sum-=2*curr->second*curr->first;
                  pre++;
                  curr++;
            }
            data.pb(Line(m,sum,max(mn,pre->first),INF));
            int cnt=INF;
            for(int j=0;j<data.size();j++){
                  cnt=min(cnt,data[j].get());
            }
            ans=min(ans,cnt);
            for(int j=n-1;j>=i;j--){
                  need[j]-=2;
            }
      }
      cout<<ans;
}

Compilation message (stderr)

krov.cpp: In function 'int32_t main()':
krov.cpp:62:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             for(int j=0;j<data.size();j++){
                         ~^~~~~~~~~~~~

• Subtask 1: 14 / 14
• Subtask 2: 14 / 14
• Subtask 3: 14 / 14
• Subtask 4: 14 / 14
• Subtask 5: 14 / 14
• Subtask 6: 0 / 14
• Subtask 7: 0 / 14
• Subtask 8: 0 / 14
• Subtask 9: 0 / 14
• Subtask 10: 0 / 14