Submission #926566

#	Time	Username	Problem	Language	Result	Execution time	Memory
926566		Aiperiii	Bridges (APIO19_bridges)	C++14	0 / 100	670 ms	399268 KiB

bridges

#include <bits/stdc++.h>
#define int long long
#define ff first
#define ss second
#define all(x) x.begin(),x.end()
#define pb push_back
using namespace std;
const int N=5e3+5;
int dp[N][N];
signed main(){
    ios_base::sync_with_stdio();
    cin.tie(0);cout.tie(0);
    int n,m;
    cin>>n>>m;
    vector <int> a(n);
    for(int i=0;i<n;i++)cin>>a[i];
    for(int i=0;i<=5000;i++){
        if(i!=a[0])dp[0][i]=1;
        if(i>m)dp[0][i]+=1e9;
    }
    for(int i=0;i<=5000;i++){
        
    }
    for(int i=1;i<n;i++){
        int mn=1e9;
        int ind=5000-m;
        for(int j=5000;j>=ind;j--){
            mn=min(mn,dp[i-1][j]);
        }
        for(int j=5000;j>=0;j--){
            if(j!=a[i])dp[i][j]=mn+1;
            else dp[i][j]=mn;
            ind--;
            if(ind>=0)mn=min(mn,dp[i-1][ind]);
        }
    }
    int ans=1e9;
    for(int i=0;i<=5000;i++){
        ans=min(ans,dp[n-1][i]);
    }
    cout<<ans<<"\n";
}
/*
 
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• Subtask 1: 0 / 13
• Subtask 2: 0 / 16
• Subtask 3: 0 / 17
• Subtask 4: 0 / 14
• Subtask 5: 0 / 13
• Subtask 6: 0 / 27