Submission #1109795

#	Time	Username	Problem	Language	Result	Execution time	Memory
1109795		Tsagana	Skyline (IZhO11_skyline)	C++14	100 / 100	44 ms	49984 KiB

skyline

#include<bits/stdc++.h>

#define IOS ios_base::sync_with_stdio(false);cin.tie();cout.tie();
#define all(x) x.begin(), x.end()
#define lnl long long
#define pq priority_queue
#define eb emplace_back
#define lb lower_bound
#define ub upper_bound
#define pb push_back
#define pp pop_back
#define F first
#define S second

using namespace std;

int antiloop = 0;

int dp[305][205][205];
int a[305];

void solve () {
	int n; cin >> n;
	for (int i = 1; i <= n; i++) cin >> a[i];

	for (int i = 1; i <= 301; i++)
	for (int j = 0; j <= 201; j++)
	for (int k = 0; k <= 201; k++)
		dp[i][j][k] = 1e9;

	for (int i = 0; i <= a[1]; i++) dp[2][a[1]-i][a[2]] = dp[1][0][a[1]-i] = i*3;

	for (int i = 2; i <= n; i++) {
		for (int j = a[i-1]; j >= 0; j--)
		for (int k = a[i];   k >= 0; k--)
			dp[i][j][k] = min(dp[i][j][k], dp[i][j][k+1]+3);

		for (int j = a[i-1]; j >= 0; j--)
		for (int k = a[i];   k >= 0; k--)
			dp[i][j][k] = min(dp[i][j][k], dp[i][j+1][k+1]+5);

		if (i != n) {
			for (int j = min({a[i-1], a[i], a[i+1]}); j >= 0; j--)
			for (int k = a[i]; k >= j; k--)
				dp[i+1][k-j][a[i+1]-j] = min(dp[i+1][k-j][a[i+1]-j], dp[i][j][k] + j*7);
		}
	}
	cout << dp[n][0][0];
}
int main() {IOS solve(); return 0;}

• Subtask 1: 100 / 100