oj.uz

Submission #579211

# Submission time Handle Problem Language Result Execution time Memory
579211 2022-06-18T13:28:03 Z cheissmart Uplifting Excursion (BOI22_vault) C++14
20 / 100
 822 ms 660 KB 
#include <bits/stdc++.h>
#define IO_OP std::ios::sync_with_stdio(0); std::cin.tie(0);
#define F first
#define S second
#define V vector
#define PB push_back
#define EB emplace_back
#define MP make_pair
#define SZ(v) int((v).size())
#define ALL(v) (v).begin(), (v).end()

using namespace std;

typedef long long ll;
typedef pair<int, int> pi;
typedef V<int> vi;

string _reset = "\u001b[0m", _yellow = "\u001b[33m", _bold = "\u001b[1m";
void DBG() { cerr << "]" << _reset << endl; }
template<class H, class...T> void DBG(H h, T ...t) {
	cerr << to_string(h);
	if(sizeof ...(t)) cerr << ", ";
	DBG(t...);
}
#ifdef CHEISSMART
#define debug(...) cerr << _yellow << _bold << "Line(" << __LINE__ << ") -> [" << #__VA_ARGS__ << "]: [", DBG(__VA_ARGS__)
#else
#define debug(...)
#endif

const int INF = 1e9 + 7, mxM = 101;

template<class T> void cmax(T& a, T b) { a = max(a, b); }

int m;
ll a[mxM * 2], b[mxM * 2], l;

signed main()
{
	IO_OP;

	cin >> m >> l;
	ll tot = 0, ans = 0;
	for(int i = -m; i <= m; i++) {
		cin >> a[i + m];
		tot += a[i + m] * i;
	}
	if(tot < l) {
		tot = -tot;
		l = -l;
		for(int i = 0; i < m; i++)
			swap(a[i], a[2 * m - i]);
	}
	tot = 0;
	for(int i = -m; i <= 0; i++) {
		tot += a[i + m] * i;
		b[i + m] = a[i + m];
		ans += b[i + m];
	}

	if(tot > l) {
		cout << "impossible\n";
		return 0;
	}
	for(int i = 1; i <= m; i++) {
		assert(tot <= l);
		b[i + m] = min((l - tot) / i, a[i + m]);
		tot += b[i + m] * i;
		ans += b[i + m];
	}
	assert(tot <= l);
	assert(tot + mxM >= l);

	int C = mxM * mxM * 2;
	vi dp(C * 2, -INF);
	dp[0 + C] = 0;

	for(int i = -m; i <= m; i++) {
		vi ndp(C * 2, -INF);
		for(int delta = -2 * m; delta <= 2 * m; delta++) {
			if(b[i + m] + delta < 0 || b[i + m] + delta > a[i + m]) continue;
			for(int j = 0; j < C * 2; j++) if(0 <= j + delta * i && j + delta * i < C * 2) {
				cmax(ndp[j + delta * i], dp[j] + delta);
			}
		}
		swap(dp, ndp);
	}
	ans += dp[l - tot + C];
	if(ans < 0) cout << "impossible\n";
	else cout << ans << '\n';


}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 596 KB Output is correct
2 Correct 2 ms 596 KB Output is correct
3 Correct 1 ms 596 KB Output is correct
4 Correct 5 ms 596 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 136 ms 620 KB Output is correct
7 Correct 51 ms 596 KB Output is correct
8 Correct 133 ms 628 KB Output is correct
9 Correct 204 ms 644 KB Output is correct
10 Correct 11 ms 596 KB Output is correct
11 Correct 10 ms 596 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 596 KB Output is correct
2 Correct 2 ms 596 KB Output is correct
3 Correct 1 ms 596 KB Output is correct
4 Correct 5 ms 596 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 136 ms 620 KB Output is correct
7 Correct 51 ms 596 KB Output is correct
8 Correct 133 ms 628 KB Output is correct
9 Correct 204 ms 644 KB Output is correct
10 Correct 11 ms 596 KB Output is correct
11 Correct 10 ms 596 KB Output is correct
12 Correct 1 ms 596 KB Output is correct
13 Correct 1 ms 596 KB Output is correct
14 Correct 1 ms 596 KB Output is correct
15 Correct 5 ms 596 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 124 ms 596 KB Output is correct
18 Correct 49 ms 660 KB Output is correct
19 Correct 119 ms 596 KB Output is correct
20 Correct 212 ms 620 KB Output is correct
21 Correct 15 ms 596 KB Output is correct
22 Correct 10 ms 596 KB Output is correct
23 Correct 1 ms 212 KB Output is correct
24 Correct 425 ms 628 KB Output is correct
25 Correct 161 ms 596 KB Output is correct
26 Correct 822 ms 620 KB Output is correct
27 Correct 811 ms 620 KB Output is correct
28 Correct 23 ms 644 KB Output is correct
29 Correct 21 ms 596 KB Output is correct

Subtask #3-1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 596 KB Output is correct
2 Correct 47 ms 624 KB Output is correct
3 Incorrect 16 ms 596 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3-2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 596 KB Output is correct
2 Correct 47 ms 624 KB Output is correct
3 Incorrect 16 ms 596 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #4-1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 596 KB Output is correct
2 Correct 47 ms 624 KB Output is correct
3 Incorrect 16 ms 596 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #4-2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 596 KB Output is correct
2 Correct 2 ms 596 KB Output is correct
3 Correct 1 ms 596 KB Output is correct
4 Correct 5 ms 596 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 136 ms 620 KB Output is correct
7 Correct 51 ms 596 KB Output is correct
8 Correct 133 ms 628 KB Output is correct
9 Correct 204 ms 644 KB Output is correct
10 Correct 11 ms 596 KB Output is correct
11 Correct 10 ms 596 KB Output is correct
12 Correct 4 ms 596 KB Output is correct
13 Correct 47 ms 624 KB Output is correct
14 Incorrect 16 ms 596 KB Output isn't correct
15 Halted 0 ms 0 KB -

Subtask #5-1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 596 KB Output is correct
2 Correct 47 ms 624 KB Output is correct
3 Incorrect 16 ms 596 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #5-2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 596 KB Output is correct
2 Correct 2 ms 596 KB Output is correct
3 Correct 1 ms 596 KB Output is correct
4 Correct 5 ms 596 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 136 ms 620 KB Output is correct
7 Correct 51 ms 596 KB Output is correct
8 Correct 133 ms 628 KB Output is correct
9 Correct 204 ms 644 KB Output is correct
10 Correct 11 ms 596 KB Output is correct
11 Correct 10 ms 596 KB Output is correct
12 Correct 1 ms 596 KB Output is correct
13 Correct 1 ms 596 KB Output is correct
14 Correct 1 ms 596 KB Output is correct
15 Correct 5 ms 596 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 124 ms 596 KB Output is correct
18 Correct 49 ms 660 KB Output is correct
19 Correct 119 ms 596 KB Output is correct
20 Correct 212 ms 620 KB Output is correct
21 Correct 15 ms 596 KB Output is correct
22 Correct 10 ms 596 KB Output is correct
23 Correct 1 ms 212 KB Output is correct
24 Correct 425 ms 628 KB Output is correct
25 Correct 161 ms 596 KB Output is correct
26 Correct 822 ms 620 KB Output is correct
27 Correct 811 ms 620 KB Output is correct
28 Correct 23 ms 644 KB Output is correct
29 Correct 21 ms 596 KB Output is correct
30 Correct 4 ms 596 KB Output is correct
31 Correct 47 ms 624 KB Output is correct
32 Incorrect 16 ms 596 KB Output isn't correct
33 Halted 0 ms 0 KB -

Subtask #6-1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 596 KB Output is correct
2 Correct 47 ms 624 KB Output is correct
3 Incorrect 16 ms 596 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #6-2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 596 KB Output is correct
2 Correct 2 ms 596 KB Output is correct
3 Correct 1 ms 596 KB Output is correct
4 Correct 5 ms 596 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 136 ms 620 KB Output is correct
7 Correct 51 ms 596 KB Output is correct
8 Correct 133 ms 628 KB Output is correct
9 Correct 204 ms 644 KB Output is correct
10 Correct 11 ms 596 KB Output is correct
11 Correct 10 ms 596 KB Output is correct
12 Correct 1 ms 596 KB Output is correct
13 Correct 1 ms 596 KB Output is correct
14 Correct 1 ms 596 KB Output is correct
15 Correct 5 ms 596 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 124 ms 596 KB Output is correct
18 Correct 49 ms 660 KB Output is correct
19 Correct 119 ms 596 KB Output is correct
20 Correct 212 ms 620 KB Output is correct
21 Correct 15 ms 596 KB Output is correct
22 Correct 10 ms 596 KB Output is correct
23 Correct 1 ms 212 KB Output is correct
24 Correct 425 ms 628 KB Output is correct
25 Correct 161 ms 596 KB Output is correct
26 Correct 822 ms 620 KB Output is correct
27 Correct 811 ms 620 KB Output is correct
28 Correct 23 ms 644 KB Output is correct
29 Correct 21 ms 596 KB Output is correct
30 Correct 4 ms 596 KB Output is correct
31 Correct 47 ms 624 KB Output is correct
32 Incorrect 16 ms 596 KB Output isn't correct
33 Halted 0 ms 0 KB -