Submission #1007054

#	Time	Username	Problem	Language	Result	Execution time	Memory
1007054		amin	Closing Time (IOI23_closing)	C++17	0 / 100	1058 ms	11968 KiB

closing

#include "closing.h"
#include <bits/stdc++.h>
#include <vector>
#define ll long long
using namespace std;
int max_score(int n, int x, int y, long long k,vector<int> u,vector<int> v,vector<int>w)
{
    ll ans=2;
    if(x>y)
        swap(x,y);
        int a=x;
    int b=y;
    vector<ll>val;
    ll co=0;
    //ll sum=0;
    ll path=0;
    for(int i=a;i<b;i++)
    {
        path+=w[i];
    }
    ll lena=0,lenb=0;
 //   int o=0;
    while(a!=0||b!=n-1)
    {
      // cout<<co<<endl;
      //  cout<<a<<' '<<b<<endl;
        ll h=1e18;
      if(a!=0)
      {h=min(h,lena+w[a-1]);
      }
      if(b!=n-1)
      {
          h=min(h,lenb+w[b]);
      }
      if(h>path)
      {
          while(co>0)
          {
           //   cout<<"HERE"<<endl;
              val.push_back(path);
              co--;
          }
      }
        if(a!=0&&b!=n-1)
        {

            if(w[a-1]<=w[b])
            {
             //   cout<<"HERE"<<endl;
                a--;
                co++;

                lena+=w[a];
                val.push_back(lena);
                continue;
            }else
            {
                co++;
                lenb+=w[b];

            val.push_back(lenb);
            b++;
            continue;
            }

        }
        if(a==0)
        {
           // cout<<"here"<<endl;

            co++;

            lenb+=w[b];
            val.push_back(lenb);
            b++;
            continue;
        }
        if(b==n-1)
        {

            co++;

            lena+=w[a-1];
            val.push_back(lena);
            a--;
        }
    }

    while(co--)
        val.push_back(path);

    for(int i=0;i<val.size();i++)
    {
    if(i)
        val[i]+=val[i-1];
    }
ll suma[n];
a=x;
b=y;
for(int i=a;i<=b;i++)
{
    if(i==a)
    {
        suma[i]=0;
        continue;
    }
//cout<<i<<' '<<w[i-1];
    suma[i]=suma[i-1]+w[i-1];
  //  cout<<suma[i]<<endl;
}
//cout<<suma[a];
//cout<<"HERE"<<endl;
ll sumb[n];
for(int i=b;i>=a;i--)
{
    if(i==b)
    {
        sumb[i]=0;
        continue;
    }
    sumb[i]=sumb[i+1]+w[i];
 //   cout<<sumb[i]<<endl;
}
ll sum=0;
ll no=0;
a=x;
b=y;
        for(int i=a;i<=b;i++)
        {
            sum=0;
            for(int y=b-1;y>=i;y--)
            {
                sum+=sumb[y];

            }

           for(int y=a;y<=b;y++)
            {
               // cout<<i<<' '<<y<<endl;
              //  cout<<sum<<' ';
                if(y>=i)
                {

                sum+=max(suma[y],sumb[y]);


                sum-=sumb[y];
                }else
                sum+=suma[y];
               // cout<<sum<<endl;
                no=b-i+1-a+y+1;
                if(sum>k)
                    continue;
                ll j=k-sum;
                auto u=upper_bound(val.begin(),val.end(),j);
                if(u!=val.begin())
                {
                 //   u--;
                    no+=u-val.begin();
                }
                 ans=max(ans,no);
               // cout<<no<<endl;


            }
        }
        return ans;
}

Compilation message (stderr)

closing.cpp: In function 'int max_score(int, int, int, long long int, std::vector<int>, std::vector<int>, std::vector<int>)':
closing.cpp:9:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
    9 |     if(x>y)
      |     ^~
closing.cpp:11:9: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   11 |         int a=x;
      |         ^~~
closing.cpp:92:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   92 |     for(int i=0;i<val.size();i++)
      |                 ~^~~~~~~~~~~

• Subtask 0: 0 / 0
• Subtask 1: 0 / 8
• Subtask 2: 0 / 9
• Subtask 3: 0 / 12
• Subtask 4: 0 / 14
• Subtask 5: 0 / 9
• Subtask 6: 0 / 11
• Subtask 7: 0 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 17