oj.uz

답안 #638550

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
638550 2022-09-06T11:03:09 Z shmad Feast (NOI19_feast) C++17
100 / 100
 182 ms 15180 KB 
#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);
	for (int i = 1; i <= n; i++) {
//		cout << dp[i][0].ff - dp[i][0].ss * ans << ' ' << dp[i][0].ss << "   " << dp[i][1].ff - dp[i][1].ss * ans << ' ' << dp[i][1].ss << '\n';
	}
//	cout << 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 126 ms 14412 KB Output is correct
2 Correct 124 ms 14764 KB Output is correct
3 Correct 125 ms 14920 KB Output is correct
4 Correct 135 ms 14960 KB Output is correct
5 Correct 123 ms 14744 KB Output is correct
6 Correct 120 ms 14396 KB Output is correct
7 Correct 131 ms 14488 KB Output is correct
8 Correct 133 ms 14788 KB Output is correct
9 Correct 123 ms 14536 KB Output is correct
10 Correct 122 ms 14684 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 118 ms 12896 KB Output is correct
2 Correct 130 ms 13096 KB Output is correct
3 Correct 110 ms 12748 KB Output is correct
4 Correct 111 ms 12984 KB Output is correct
5 Correct 122 ms 14508 KB Output is correct
6 Correct 114 ms 12876 KB Output is correct
7 Correct 122 ms 13104 KB Output is correct
8 Correct 135 ms 14844 KB Output is correct
9 Correct 118 ms 14452 KB Output is correct
10 Correct 112 ms 13100 KB Output is correct

Subtask #3
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 141 ms 14948 KB Output is correct
2 Correct 149 ms 14804 KB Output is correct
3 Correct 137 ms 14828 KB Output is correct
4 Correct 137 ms 14684 KB Output is correct
5 Correct 148 ms 14908 KB Output is correct
6 Correct 139 ms 15088 KB Output is correct
7 Correct 133 ms 15052 KB Output is correct
8 Correct 132 ms 14900 KB Output is correct
9 Correct 145 ms 15180 KB Output is correct
10 Correct 144 ms 15056 KB Output is correct

Subtask #4
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 328 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 328 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 328 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 0 ms 328 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 328 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 328 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 332 KB Output is correct
13 Correct 1 ms 324 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 328 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct

Subtask #6
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 328 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 328 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 328 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 332 KB Output is correct
13 Correct 1 ms 324 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 328 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 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 2 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 2 ms 428 KB Output is correct
26 Correct 1 ms 344 KB Output is correct
27 Correct 2 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 2 ms 340 KB Output is correct
30 Correct 2 ms 340 KB Output is correct

Subtask #7
29.0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 126 ms 14412 KB Output is correct
2 Correct 124 ms 14764 KB Output is correct
3 Correct 125 ms 14920 KB Output is correct
4 Correct 135 ms 14960 KB Output is correct
5 Correct 123 ms 14744 KB Output is correct
6 Correct 120 ms 14396 KB Output is correct
7 Correct 131 ms 14488 KB Output is correct
8 Correct 133 ms 14788 KB Output is correct
9 Correct 123 ms 14536 KB Output is correct
10 Correct 122 ms 14684 KB Output is correct
11 Correct 118 ms 12896 KB Output is correct
12 Correct 130 ms 13096 KB Output is correct
13 Correct 110 ms 12748 KB Output is correct
14 Correct 111 ms 12984 KB Output is correct
15 Correct 122 ms 14508 KB Output is correct
16 Correct 114 ms 12876 KB Output is correct
17 Correct 122 ms 13104 KB Output is correct
18 Correct 135 ms 14844 KB Output is correct
19 Correct 118 ms 14452 KB Output is correct
20 Correct 112 ms 13100 KB Output is correct
21 Correct 141 ms 14948 KB Output is correct
22 Correct 149 ms 14804 KB Output is correct
23 Correct 137 ms 14828 KB Output is correct
24 Correct 137 ms 14684 KB Output is correct
25 Correct 148 ms 14908 KB Output is correct
26 Correct 139 ms 15088 KB Output is correct
27 Correct 133 ms 15052 KB Output is correct
28 Correct 132 ms 14900 KB Output is correct
29 Correct 145 ms 15180 KB Output is correct
30 Correct 144 ms 15056 KB Output is correct
31 Correct 0 ms 328 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 340 KB Output is correct
35 Correct 1 ms 328 KB Output is correct
36 Correct 1 ms 212 KB Output is correct
37 Correct 1 ms 340 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 1 ms 328 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 332 KB Output is correct
43 Correct 1 ms 324 KB Output is correct
44 Correct 1 ms 332 KB Output is correct
45 Correct 1 ms 340 KB Output is correct
46 Correct 1 ms 340 KB Output is correct
47 Correct 1 ms 328 KB Output is correct
48 Correct 0 ms 340 KB Output is correct
49 Correct 1 ms 340 KB Output is correct
50 Correct 1 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 2 ms 340 KB Output is correct
54 Correct 1 ms 340 KB Output is correct
55 Correct 2 ms 428 KB Output is correct
56 Correct 1 ms 344 KB Output is correct
57 Correct 2 ms 340 KB Output is correct
58 Correct 1 ms 340 KB Output is correct
59 Correct 2 ms 340 KB Output is correct
60 Correct 2 ms 340 KB Output is correct
61 Correct 173 ms 14740 KB Output is correct
62 Correct 166 ms 15180 KB Output is correct
63 Correct 143 ms 14668 KB Output is correct
64 Correct 182 ms 14888 KB Output is correct
65 Correct 165 ms 14984 KB Output is correct
66 Correct 162 ms 14924 KB Output is correct
67 Correct 159 ms 14724 KB Output is correct
68 Correct 146 ms 15012 KB Output is correct
69 Correct 137 ms 14720 KB Output is correct
70 Correct 151 ms 14644 KB Output is correct