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답안 #394492

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
394492 2021-04-26T17:53:05 Z rocks03 Feast (NOI19_feast) C++14
100 / 100
 267 ms 9432 KB 
#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define pii pair<int, int>
#define pll pair<ll, ll>
#define ff first
#define ss second
#define pb push_back
#define SZ(x) ((int)(x).size())
#define all(x) x.begin(), x.end()
#define debug(x) cout << #x << ": " << x << " "
#define nl cout << "\n"
#define rep(i, a, b) for(int i = (a); i < (b); i++)
#define per(i, a, b) for(int i = (a); i >= (b); i--)
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

const ll INF = 1e16;
const int MAXN = 3e5+100;
int N, K, a[MAXN];
ll dp[MAXN];

pll get(ll penalty){
    vector<ll> dp(N + 1, 0), cnt(N + 1, 0);
    ll s = 0, curcnt = 0, mx = 0, mxcnt = 0;
    rep(i, 1, N + 1){
        dp[i] = dp[i - 1], cnt[i] = cnt[i - 1];
        s += a[i];
        if(s < 0){
            s = 0, curcnt = 0;
        }
        if(mx < s){
            mx = s, mxcnt = curcnt;
        }
        if(mx - penalty > dp[i]){
            dp[i] = mx - penalty;
            cnt[i] = mxcnt + 1;
        }
        if(dp[i] > s){
            s = dp[i], curcnt = cnt[i];
        }
        if(s > mx){
            mx = s, mxcnt = cnt[i];
        }
    }
    return {dp[N], cnt[N]};
}

void solve(){
    cin >> N >> K;
    int cnt = 0;
    rep(i, 1, N + 1){
        cin >> a[i];
    }
    ll l = -1, r = INF;
    while(r - l > 1){
        ll m = (l + r) / 2;
        pll ans = get(m);
        if(ans.ss <= K){
            r = m;
        } else{
            l = m;
        }
    }
    pll ans = get(r);
    ll solution = ans.ff + ans.ss * r;
    cout << solution;
}
 
int main(){
    ios_base::sync_with_stdio(false), cin.tie(nullptr);
    solve();
    return 0;
}

Compilation message

feast.cpp: In function 'void solve()':
feast.cpp:50:9: warning: unused variable 'cnt' [-Wunused-variable]
   50 |     int cnt = 0;
      |         ^~~

Subtask #1
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 178 ms 6364 KB Output is correct
2 Correct 198 ms 6344 KB Output is correct
3 Correct 178 ms 6376 KB Output is correct
4 Correct 182 ms 6352 KB Output is correct
5 Correct 184 ms 6308 KB Output is correct
6 Correct 175 ms 6228 KB Output is correct
7 Correct 185 ms 6204 KB Output is correct
8 Correct 200 ms 6456 KB Output is correct
9 Correct 175 ms 6360 KB Output is correct
10 Correct 177 ms 6320 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 171 ms 6412 KB Output is correct
2 Correct 182 ms 6588 KB Output is correct
3 Correct 184 ms 6364 KB Output is correct
4 Correct 197 ms 6460 KB Output is correct
5 Correct 193 ms 6228 KB Output is correct
6 Correct 166 ms 6252 KB Output is correct
7 Correct 170 ms 6396 KB Output is correct
8 Correct 186 ms 6360 KB Output is correct
9 Correct 185 ms 6240 KB Output is correct
10 Correct 171 ms 6416 KB Output is correct

Subtask #3
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 218 ms 6536 KB Output is correct
2 Correct 212 ms 6584 KB Output is correct
3 Correct 223 ms 6504 KB Output is correct
4 Correct 202 ms 6452 KB Output is correct
5 Correct 243 ms 6536 KB Output is correct
6 Correct 227 ms 6552 KB Output is correct
7 Correct 207 ms 6512 KB Output is correct
8 Correct 218 ms 6560 KB Output is correct
9 Correct 224 ms 6560 KB Output is correct
10 Correct 211 ms 6468 KB Output is correct

Subtask #4
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct

Subtask #5
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct

Subtask #6
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 2 ms 332 KB Output is correct
22 Correct 2 ms 332 KB Output is correct
23 Correct 2 ms 332 KB Output is correct
24 Correct 2 ms 332 KB Output is correct
25 Correct 2 ms 368 KB Output is correct
26 Correct 2 ms 332 KB Output is correct
27 Correct 2 ms 332 KB Output is correct
28 Correct 2 ms 332 KB Output is correct
29 Correct 2 ms 332 KB Output is correct
30 Correct 1 ms 332 KB Output is correct

Subtask #7
29.0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 178 ms 6364 KB Output is correct
2 Correct 198 ms 6344 KB Output is correct
3 Correct 178 ms 6376 KB Output is correct
4 Correct 182 ms 6352 KB Output is correct
5 Correct 184 ms 6308 KB Output is correct
6 Correct 175 ms 6228 KB Output is correct
7 Correct 185 ms 6204 KB Output is correct
8 Correct 200 ms 6456 KB Output is correct
9 Correct 175 ms 6360 KB Output is correct
10 Correct 177 ms 6320 KB Output is correct
11 Correct 171 ms 6412 KB Output is correct
12 Correct 182 ms 6588 KB Output is correct
13 Correct 184 ms 6364 KB Output is correct
14 Correct 197 ms 6460 KB Output is correct
15 Correct 193 ms 6228 KB Output is correct
16 Correct 166 ms 6252 KB Output is correct
17 Correct 170 ms 6396 KB Output is correct
18 Correct 186 ms 6360 KB Output is correct
19 Correct 185 ms 6240 KB Output is correct
20 Correct 171 ms 6416 KB Output is correct
21 Correct 218 ms 6536 KB Output is correct
22 Correct 212 ms 6584 KB Output is correct
23 Correct 223 ms 6504 KB Output is correct
24 Correct 202 ms 6452 KB Output is correct
25 Correct 243 ms 6536 KB Output is correct
26 Correct 227 ms 6552 KB Output is correct
27 Correct 207 ms 6512 KB Output is correct
28 Correct 218 ms 6560 KB Output is correct
29 Correct 224 ms 6560 KB Output is correct
30 Correct 211 ms 6468 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 1 ms 332 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 1 ms 204 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Correct 1 ms 204 KB Output is correct
37 Correct 1 ms 204 KB Output is correct
38 Correct 1 ms 332 KB Output is correct
39 Correct 1 ms 332 KB Output is correct
40 Correct 1 ms 332 KB Output is correct
41 Correct 1 ms 332 KB Output is correct
42 Correct 1 ms 332 KB Output is correct
43 Correct 1 ms 332 KB Output is correct
44 Correct 1 ms 332 KB Output is correct
45 Correct 1 ms 332 KB Output is correct
46 Correct 1 ms 332 KB Output is correct
47 Correct 1 ms 332 KB Output is correct
48 Correct 1 ms 332 KB Output is correct
49 Correct 1 ms 332 KB Output is correct
50 Correct 1 ms 332 KB Output is correct
51 Correct 2 ms 332 KB Output is correct
52 Correct 2 ms 332 KB Output is correct
53 Correct 2 ms 332 KB Output is correct
54 Correct 2 ms 332 KB Output is correct
55 Correct 2 ms 368 KB Output is correct
56 Correct 2 ms 332 KB Output is correct
57 Correct 2 ms 332 KB Output is correct
58 Correct 2 ms 332 KB Output is correct
59 Correct 2 ms 332 KB Output is correct
60 Correct 1 ms 332 KB Output is correct
61 Correct 252 ms 6260 KB Output is correct
62 Correct 259 ms 9432 KB Output is correct
63 Correct 226 ms 9064 KB Output is correct
64 Correct 258 ms 9304 KB Output is correct
65 Correct 262 ms 9272 KB Output is correct
66 Correct 267 ms 9216 KB Output is correct
67 Correct 253 ms 9200 KB Output is correct
68 Correct 217 ms 9308 KB Output is correct
69 Correct 212 ms 9208 KB Output is correct
70 Correct 209 ms 9036 KB Output is correct