Submission #1112013

#	Time	Username	Problem	Language	Result	Execution time	Memory
1112013		0pt1mus23	Skyline (IZhO11_skyline)	C++14	0 / 100	160 ms	262144 KiB

skyline

#include <bits/stdc++.h>
using namespace std;
#define int unsigned long long int
#define ins insert      
#define pb push_back
#define endl '\n'
#define putr(x) cout<<x<<endl;return; 
#define all(x) x.begin(),x.end()
int nxt(){ int x;cin>>x; return x; }
const int mod = 1e9 +7, sze = 3e2 +23, inf = LLONG_MAX, LG = 20;
// mt19937 rng(time(0));
int dp[sze][sze][sze];
//saksuk, I checked someone's code

void fast(){
    int n;
    cin>>n;
    vector<int> arr(n+1,0);
    for(int i=0;i<n;i++){
        cin>>arr[i+1];
    }

    for(int i=0;i<sze;i++){
        for(int j=0;j<sze;j++){
            for(int k =0; k<sze;k++){
                dp[i][j][k]=inf;
            }
        }
    }

    for(int i =0;i<=arr[1];i++){
        dp[1][0][i]=3*i;
    }

    for(int i =2;i<=n;i++){
        for(int j=0;j<=arr[i-1];j++){
            for(int k =0;k<=arr[i];k++){
                if(k>0){
                    dp[i][j][k]=dp[i][j][k-1]+3;
                }
                if(k>0 && j>0){
                    dp[i][j][k]=min(dp[i][j][k],dp[i][j-1][k-1] + 5);
                }
                int sil = min(j,k);
                if(sil<=arr[i-2]){
                    dp[i][j][k]=min(dp[i][j][k],dp[i-1][ arr[i-2] -sil][ j - sil] + sil*7 + 3*(k-sil));
                }
            }
        }
    }   

    putr(dp[ n][arr[n-1] ][arr[n]]);
}

signed main(){
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int tt = 1;

    // cin>>tt;
 
    while(tt--){
        fast();
    }
 
    return 0;
}

• Subtask 1: 0 / 100