답안 #638551

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
638551	2022-09-06T11:03:54 Z	shmad	Feast (NOI19_feast)	C++17	100 / 100	169 ms	12056 KB

feast

#pragma GCC optimize("O3", "unroll-loops") // "Ofast" 	
#pragma GCC target("avx2", "bmi", "bmi2", "lzcnt", "popcnt") 

#include <bits/stdc++.h>

//#define int long long
#define vt vector
#define pb push_back
#define all(x) (x).begin(), (x).end()
#define sz(x) (int)(x).size()
#define ff first
#define ss second
#define dbg(x) cerr << #x << " = " << x << '\n'
#define bit(x, i) ((x) >> (i) & 1)

using namespace std;
using ll = long long;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
using vvt = vt< vt<int> >;

const int N = 1e6 + 5, mod = 1e9 + 7, B = 500;
const ll inf = 1e18 + 7, LIM = (1ll << 60);
const double eps = 1e-6;

int n, k;
ll a[N], p[N];
pll dp[N][2];

ll calc (ll x) {
	for (int i = 1; i <= n; i++) {
		dp[i][0] = max(dp[i - 1][0], dp[i - 1][1]);
		ll res = dp[i - 1][0].ff - x;
		int kol = dp[i - 1][0].ss - 1;
		dp[i][1] = max(dp[i - 1][1], {res, kol});
		dp[i][1].ff += a[i];
		dp[i][1] = max(dp[i][1], {a[i], 0});
	}
	return max(dp[n][0], dp[n][1]).ss * -1;
}

bool check (ll x) {
	return (calc(x) < k);
}

void solve () {
	cin >> n >> k;
	for (int i = 1; i <= n; i++) cin >> a[i];
	ll l = 0, r = inf, ans = 0;
	while (l <= r) {
		ll mid = l + r >> 1;
		if (check(mid)) ans = mid, r = mid - 1;
		else l = mid + 1;
	}             
	calc(ans);
	cout << max(dp[n][0], dp[n][1]).ff + ans * (k - 1);
	cout << '\n';
}

bool testcases = 0;

signed main() {
#ifdef ONLINE_JUDGE
	freopen(".in", "r", stdin);
	freopen(".out", "w", stdout);
#endif
	cin.tie(0) -> sync_with_stdio(0);
	int test = 1;
	if (testcases) cin >> test;
	for (int cs = 1; cs <= test; cs++) {
		solve();
	}
}

Compilation message

feast.cpp: In function 'void solve()':
feast.cpp:51:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   51 |   ll mid = l + r >> 1;
      |            ~~^~~

Subtask #1
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	119 ms	11724 KB	Output is correct
2	Correct	123 ms	11908 KB	Output is correct
3	Correct	123 ms	12044 KB	Output is correct
4	Correct	124 ms	11964 KB	Output is correct
5	Correct	123 ms	11892 KB	Output is correct
6	Correct	118 ms	11604 KB	Output is correct
7	Correct	119 ms	11596 KB	Output is correct
8	Correct	122 ms	11928 KB	Output is correct
9	Correct	117 ms	11724 KB	Output is correct
10	Correct	120 ms	11848 KB	Output is correct

Subtask #2
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	108 ms	11732 KB	Output is correct
2	Correct	116 ms	12040 KB	Output is correct
3	Correct	111 ms	11756 KB	Output is correct
4	Correct	111 ms	11832 KB	Output is correct
5	Correct	123 ms	11604 KB	Output is correct
6	Correct	112 ms	11692 KB	Output is correct
7	Correct	110 ms	12056 KB	Output is correct
8	Correct	123 ms	11988 KB	Output is correct
9	Correct	118 ms	11624 KB	Output is correct
10	Correct	113 ms	11880 KB	Output is correct

Subtask #3
18.0 / 18.0

#	결과	실행 시간	메모리	Grader output
1	Correct	133 ms	11856 KB	Output is correct
2	Correct	129 ms	11780 KB	Output is correct
3	Correct	127 ms	11852 KB	Output is correct
4	Correct	128 ms	11740 KB	Output is correct
5	Correct	129 ms	11836 KB	Output is correct
6	Correct	132 ms	11956 KB	Output is correct
7	Correct	129 ms	11976 KB	Output is correct
8	Correct	129 ms	12004 KB	Output is correct
9	Correct	132 ms	12040 KB	Output is correct
10	Correct	132 ms	12004 KB	Output is correct

Subtask #4
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	0 ms	212 KB	Output is correct
7	Correct	0 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct

Subtask #5
11.0 / 11.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	0 ms	212 KB	Output is correct
7	Correct	0 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	1 ms	340 KB	Output is correct
12	Correct	1 ms	340 KB	Output is correct
13	Correct	1 ms	340 KB	Output is correct
14	Correct	0 ms	340 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct
16	Correct	1 ms	340 KB	Output is correct
17	Correct	0 ms	340 KB	Output is correct
18	Correct	1 ms	340 KB	Output is correct
19	Correct	1 ms	340 KB	Output is correct
20	Correct	0 ms	340 KB	Output is correct

Subtask #6
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	0 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	0 ms	212 KB	Output is correct
7	Correct	0 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	1 ms	340 KB	Output is correct
12	Correct	1 ms	340 KB	Output is correct
13	Correct	1 ms	340 KB	Output is correct
14	Correct	0 ms	340 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct
16	Correct	1 ms	340 KB	Output is correct
17	Correct	0 ms	340 KB	Output is correct
18	Correct	1 ms	340 KB	Output is correct
19	Correct	1 ms	340 KB	Output is correct
20	Correct	0 ms	340 KB	Output is correct
21	Correct	1 ms	340 KB	Output is correct
22	Correct	1 ms	340 KB	Output is correct
23	Correct	1 ms	340 KB	Output is correct
24	Correct	1 ms	340 KB	Output is correct
25	Correct	2 ms	340 KB	Output is correct
26	Correct	1 ms	340 KB	Output is correct
27	Correct	1 ms	340 KB	Output is correct
28	Correct	1 ms	340 KB	Output is correct
29	Correct	1 ms	340 KB	Output is correct
30	Correct	1 ms	340 KB	Output is correct

Subtask #7
29.0 / 29.0

#	결과	실행 시간	메모리	Grader output
1	Correct	119 ms	11724 KB	Output is correct
2	Correct	123 ms	11908 KB	Output is correct
3	Correct	123 ms	12044 KB	Output is correct
4	Correct	124 ms	11964 KB	Output is correct
5	Correct	123 ms	11892 KB	Output is correct
6	Correct	118 ms	11604 KB	Output is correct
7	Correct	119 ms	11596 KB	Output is correct
8	Correct	122 ms	11928 KB	Output is correct
9	Correct	117 ms	11724 KB	Output is correct
10	Correct	120 ms	11848 KB	Output is correct
11	Correct	108 ms	11732 KB	Output is correct
12	Correct	116 ms	12040 KB	Output is correct
13	Correct	111 ms	11756 KB	Output is correct
14	Correct	111 ms	11832 KB	Output is correct
15	Correct	123 ms	11604 KB	Output is correct
16	Correct	112 ms	11692 KB	Output is correct
17	Correct	110 ms	12056 KB	Output is correct
18	Correct	123 ms	11988 KB	Output is correct
19	Correct	118 ms	11624 KB	Output is correct
20	Correct	113 ms	11880 KB	Output is correct
21	Correct	133 ms	11856 KB	Output is correct
22	Correct	129 ms	11780 KB	Output is correct
23	Correct	127 ms	11852 KB	Output is correct
24	Correct	128 ms	11740 KB	Output is correct
25	Correct	129 ms	11836 KB	Output is correct
26	Correct	132 ms	11956 KB	Output is correct
27	Correct	129 ms	11976 KB	Output is correct
28	Correct	129 ms	12004 KB	Output is correct
29	Correct	132 ms	12040 KB	Output is correct
30	Correct	132 ms	12004 KB	Output is correct
31	Correct	1 ms	212 KB	Output is correct
32	Correct	0 ms	212 KB	Output is correct
33	Correct	0 ms	212 KB	Output is correct
34	Correct	0 ms	212 KB	Output is correct
35	Correct	0 ms	212 KB	Output is correct
36	Correct	0 ms	212 KB	Output is correct
37	Correct	0 ms	212 KB	Output is correct
38	Correct	0 ms	212 KB	Output is correct
39	Correct	0 ms	212 KB	Output is correct
40	Correct	0 ms	212 KB	Output is correct
41	Correct	1 ms	340 KB	Output is correct
42	Correct	1 ms	340 KB	Output is correct
43	Correct	1 ms	340 KB	Output is correct
44	Correct	0 ms	340 KB	Output is correct
45	Correct	1 ms	340 KB	Output is correct
46	Correct	1 ms	340 KB	Output is correct
47	Correct	0 ms	340 KB	Output is correct
48	Correct	1 ms	340 KB	Output is correct
49	Correct	1 ms	340 KB	Output is correct
50	Correct	0 ms	340 KB	Output is correct
51	Correct	1 ms	340 KB	Output is correct
52	Correct	1 ms	340 KB	Output is correct
53	Correct	1 ms	340 KB	Output is correct
54	Correct	1 ms	340 KB	Output is correct
55	Correct	2 ms	340 KB	Output is correct
56	Correct	1 ms	340 KB	Output is correct
57	Correct	1 ms	340 KB	Output is correct
58	Correct	1 ms	340 KB	Output is correct
59	Correct	1 ms	340 KB	Output is correct
60	Correct	1 ms	340 KB	Output is correct
61	Correct	159 ms	11760 KB	Output is correct
62	Correct	157 ms	12052 KB	Output is correct
63	Correct	139 ms	11808 KB	Output is correct
64	Correct	169 ms	11960 KB	Output is correct
65	Correct	163 ms	11952 KB	Output is correct
66	Correct	159 ms	11920 KB	Output is correct
67	Correct	158 ms	11656 KB	Output is correct
68	Correct	131 ms	11972 KB	Output is correct
69	Correct	127 ms	11660 KB	Output is correct
70	Correct	128 ms	11696 KB	Output is correct

답안 #638551

Compilation message

Subtask #1 4.0 / 4.0

Subtask #2 8.0 / 8.0

Subtask #3 18.0 / 18.0

Subtask #4 10.0 / 10.0

Subtask #5 11.0 / 11.0

Subtask #6 20.0 / 20.0

Subtask #7 29.0 / 29.0

Subtask #1
4.0 / 4.0

Subtask #2
8.0 / 8.0

Subtask #3
18.0 / 18.0

Subtask #4
10.0 / 10.0

Subtask #5
11.0 / 11.0

Subtask #6
20.0 / 20.0

Subtask #7
29.0 / 29.0