#include<bits/stdc++.h>
#define endl '\n'
#define ll long long
using namespace std;
const ll MAX_N = 302;
const ll MAX_H = 202;
const ll INF = 1e9+7;
ll n,dp[MAX_N][MAX_H],a[MAX_N];
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cout.tie(NULL);
cin>>n;
for(ll i=0; i<MAX_N; i++)
{
for(ll j=0; j<MAX_H; j++)
{
dp[i][j] = INF;
}
}
for(ll i=1; i<=n; i++) cin>>a[i];
for(ll j=0; j<=a[1]; j++)
{
dp[1][j] = (a[1]-j)*3LL;
}
if(n == 1)
{
cout<<dp[n][0]<<endl;
return 0;
}
for(ll x=0; x<=a[2]; x++)
{
ll mini = min(a[2]-x,a[1]);
dp[2][x] = (mini*5LL)+(a[1]-mini)*3LL+(a[2]-x-mini)*3LL;
}
for(ll i=3; i<=n; i++)
{
for(ll x=0; x<=a[i]; x++)
{
ll tmp = 0;
for(ll j=0; j<=min({a[i-2],a[i-1],a[i]-x}); j++)
{
tmp = dp[i-2][j]+j*7LL;
ll mini = min(a[i]-x-j,a[i-1]-j);
tmp += mini*5LL;
tmp += (a[i-1]-j-mini)*3LL+(a[i]-x-j-mini)*3LL;
dp[i][x] = min(dp[i][x],tmp);
// cout<<i<<" "<<x<<" "<<j<<" "<<dp[i][x]<<endl;
}
}
for(int x=0; x<=a[i]; x++)
{
dp[i][x] = min(dp[i-1][0]+(a[i]-x)*3LL,dp[i][x]);
}
for(int x=0; x<=a[i]; x++)
{
ll mini = min(a[i]-x,a[i-1]);
dp[i][x] = min(dp[i-2][0]+mini*5LL+(a[i]-x-mini)*3LL+(a[i-1]-mini)*3LL,dp[i][x]);
}
}
cout<<dp[n][0]<<endl;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
716 KB |
Output is correct |
| 2 |
Correct |
1 ms |
716 KB |
Output is correct |
| 3 |
Incorrect |
0 ms |
716 KB |
Output isn't correct |
| 4 |
Halted |
0 ms |
0 KB |
- |
