Submission #560682

#	Time	Username	Problem	Language	Result	Execution time	Memory
560682		ala2	Painting Walls (APIO20_paint)	C++14	12 / 100	44 ms	10196 KiB

paint

#include "paint.h"
#include <vector>
#include <bits/stdc++.h>
#define F first
#define S second
//#define int long long
#define pb push_back
using namespace std;
int a[1001000];
int b[1001000];
int c[1001000];
int big[1001000];
int n,m;
int good(int i)
{
    int x=c[i];
    int dis=m-x+i;
    if(c[dis]!=m)
        return 0;
    if(big[dis]<m-x+1)
    {
        return 0;
    }
    if(x==1)
        return 1;
    int nw=dis+1;
    int bag=nw+x-2;
    if(c[nw]!=1)
        return 0;
    if(c[bag]!=x-1)
        return 0;
    if(big[bag]<x-1)
        return 0;
    return 1;



}
vector<int>v;
int minimumInstructions(int N, int M, int K, vector<int> C,vector<int> A, vector<vector<int>> B)
{
    n=N;
    m=M;
    for(int i=0;i<C.size();i++)
    {
        a[i]=C[i];
    }
    for(int i=0;i<B.size();i++)
    {
        for(int j=0;j<B[i].size();j++)
        {
            b[B[i][j]]=i+1;
        }
    }
    //int bb=0;
 //   cout<<endl;
    for(int i=0;i<n;i++)
    {
        int x=a[i];
        if(b[x]==0)
            return -1;
        c[i]=b[x];
   //     cout<<c[i]<<" ";
    }
  //  cout<<endl;
    big[0]=1;
  //  cout<<1<<" ";
    for(int i=1;i<n;i++)
    {
        if(c[i]-c[i-1]==1)
        {
            big[i]=big[i-1]+1;
        }
        else big[i]=1;
      //  cout<<big[1]<<" ";
    }
//    cout<<endl;

    int x=n-m;
    for(int i=0;i<=x;i++)
    {
        if(good(i))
        {
            v.pb(i);
        }
    }
        sort(v.begin(),v.end());
    //for(auto i:v)
   //     cout<<i<<" ";
   // cout<<endl;

    int cur=0;
    int ans=1;
    int bb=0;
    if(v.size()==0)
    {
        return -1;
    }
    if(v[0]!=0)
    {
        return -1;
    }
    for(int i=1; i<v.size(); i++)
    {
        if(v[i]-v[i-1]>m)
            return -1;
    }
    if(n-v[v.size()-1]>m)
        return -1;

    if(n==m)
    {
        return 1;
    }
    for(int i=1; i<v.size(); i++)
    {
        if(cur==x)
        {
            break;
        }
        if(v[i]==x)
        {
            ans++;
            break;

        }

        if(i==v.size()-1)
        {
            if(v[i]==x)
            {
                ans++;
                break;
            }
            else
            {
                bb=1;
                break;
            }
        }
        if(v[i]-cur>m)
            bb=1;
        if(v[i+1]-cur>m)
        {
            ans++;
            cur=v[i];
        }
    }
    if(bb)
        return -1;
   return ans;

}
/*
17
5
6
1 2 3 4 6 1 2 4 6 6 1 2 3 4 6 1 2
1 1
1 2
1 3
1 4
1 6



*/

Compilation message (stderr)

paint.cpp: In function 'int minimumInstructions(int, int, int, std::vector<int>, std::vector<int>, std::vector<std::vector<int> >)':
paint.cpp:44:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   44 |     for(int i=0;i<C.size();i++)
      |                 ~^~~~~~~~~
paint.cpp:48:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   48 |     for(int i=0;i<B.size();i++)
      |                 ~^~~~~~~~~
paint.cpp:50:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   50 |         for(int j=0;j<B[i].size();j++)
      |                     ~^~~~~~~~~~~~
paint.cpp:103:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  103 |     for(int i=1; i<v.size(); i++)
      |                  ~^~~~~~~~~
paint.cpp:115:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  115 |     for(int i=1; i<v.size(); i++)
      |                  ~^~~~~~~~~
paint.cpp:128:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  128 |         if(i==v.size()-1)
      |            ~^~~~~~~~~~~~

• Subtask 1: 12 / 12
• Subtask 2: 0 / 15
• Subtask 3: 0 / 13
• Subtask 4: 0 / 23
• Subtask 5: 0 / 37