제출 #1329520

#제출 시각아이디문제언어결과실행 시간메모리
1329520Faisal_Saqib과수원 (NOI14_orchard)C++20
25 / 25
83 ms55156 KiB
#include <iostream>
#include <vector>
#include <algorithm>
#include <array>
#include <cmath>
#include <queue>
#include <set>
#include <map>
#include <iomanip>
using namespace std;
typedef long long ll;
typedef long double ld;
#define int ll
int32_t main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int n,m;
    cin>>n>>m;
    int a[n+2][m+2]={0},pre[n+2][m+2]={0};
    for(int i=0;i<=n+1;i++)
    {
        for(int j=0;j<=m+1;j++)
        {
            pre[i][j]=0;
            // cout<<pre[i][j]<<' ';
        }
        // cout<<endl;
    }
    int t1=0,t0=0,mi=0,mx=0;
    for(int i=1;i<=n;i++)
    {
        for(int j=1;j<=m;j++)
        {
            cin>>a[i][j];
            if(a[i][j]==1)
            {
                t1++;
                a[i][j]=1;
            }
            else if(a[i][j]==0)
            {
                t0++;
                a[i][j]=-1;
            }
            pre[i][j]=pre[i][j-1]+a[i][j];
        }
        int tlp[m+2];
        for(int j=0;j<=m+1;j++)tlp[j]=0;
        for(int i1=i;i1>0;i1--)
        {
            int mcx=0,mci=0;
            for(int j=0;j<=m;j++)
            {
                tlp[j]+=pre[i1][j];
                mcx=max(mcx,tlp[j]);
                mci=min(mci,tlp[j]);
                mx=max(mx,tlp[j]-mci);
                mi=min(mi,tlp[j]-mcx);   
            }
        }
    }
    cout<<t1-mx<<endl;
}
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