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Submission #962014

# Submission time Handle Problem Language Result Execution time Memory
962014 2024-04-13T03:10:54 Z vjudge1 Feast (NOI19_feast) C++17
100 / 100
 286 ms 25860 KB 
#include <bits/stdc++.h>

using namespace std;
using ll = long long;

#define int long long
#define FOR(i, a, b) for (int i = a; i <= b; i++)
#define FORD(i, a, b) for (int i = b; i >= a; i --)
#define REP(i, n) for (int i = 0; i < n; ++i)
#define REPD(i, n) for (int i = n - 1; i >= 0; --i)

#define MASK(i) (1LL << (i))
#define BIT(x, i) (((x) >> (i)) & 1)

constexpr ll LINF = (1ll << 60);
constexpr int INF = (1ll << 30);
constexpr int Mod = 1e9 + 7;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

void setupIO(){
    #define name "Whisper"
    //Phu Trong from Nguyen Tat Thanh High School for gifted student
    srand(time(NULL));
    cin.tie(nullptr)->sync_with_stdio(false); cout.tie(nullptr);
    //freopen(name".inp", "r", stdin);
    //freopen(name".out", "w", stdout);
    cout << fixed << setprecision(10);
}

template <class X, class Y>
    bool minimize(X &x, const Y &y){
        X eps = 1e-9;
        if (x > y + eps) {x = y; return 1;}
        return 0;
    }

template <class X, class Y>
    bool maximize(X &x, const Y &y){
        X eps = 1e-9;
        if (x + eps < y) {x = y; return 1;}
        return 0;
    }
const int MAX = 3e5 + 5;
int nArr, numSeg;
int a[MAX], val[MAX];
void Whisper(){
    cin >> nArr >> numSeg;
    for (int i = 1; i <= nArr; ++i) cin >> a[i];
    a[0] = a[nArr + 1] = -1e18;
    int cnt = 0;
    vector<int> comp;
    for (int i = 0; i <= nArr + 1; ){
        int sum = 0; int r = i;
        while(r <= nArr + 1 && (a[r] >= 0) == (a[i] >= 0)){
            sum += a[r];
            ++r;
        }
        comp.push_back(sum);
        if(sum >= 0){
            ++cnt;
        }
        i = r;
    }
    for (int i = 0; i < (int)comp.size(); ++i) val[i] = comp[i];
    set<pair<int, int>> s; set<int> pos;
    for (int i = 0; i < (int)comp.size(); ++i){
        pos.insert(i);
        s.insert(make_pair(abs(comp[i]), i));
    }
    for (int i = cnt; i > numSeg; --i){
        int v = (*s.begin()).first;
        int id = (*s.begin()).second;
        auto new_pos = pos.lower_bound(id);
        auto l = prev(new_pos), r = next(new_pos);

        s.erase(make_pair(abs(val[*l]), *l));
        s.erase(make_pair(abs(val[*r]), *r));
        s.erase(make_pair(abs(val[id]), id));

        val[id] += val[*l]; val[id] += val[*r];

        pos.erase(*l); pos.erase(*r);
        s.insert(make_pair(abs(val[id]), id));
    }
    int ans = 0;
    for (auto&v : pos){
        if(val[v] >= 0) ans += val[v];
    }
    cout << ans;
}


signed main(){
    setupIO();
    int Test = 1;
//    cin >> Test;
    for ( int i = 1 ; i <= Test ; i++ ){
        Whisper();
        if (i < Test) cout << '\n';
    }
}

Compilation message

feast.cpp: In function 'void Whisper()':
feast.cpp:71:13: warning: unused variable 'v' [-Wunused-variable]
   71 |         int v = (*s.begin()).first;
      |             ^

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 5460 KB Output is correct
2 Correct 24 ms 5712 KB Output is correct
3 Correct 23 ms 5560 KB Output is correct
4 Correct 23 ms 5720 KB Output is correct
5 Correct 26 ms 5724 KB Output is correct
6 Correct 23 ms 5496 KB Output is correct
7 Correct 24 ms 5720 KB Output is correct
8 Correct 24 ms 5724 KB Output is correct
9 Correct 27 ms 5576 KB Output is correct
10 Correct 24 ms 5724 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 3928 KB Output is correct
2 Correct 15 ms 3936 KB Output is correct
3 Correct 17 ms 3932 KB Output is correct
4 Correct 15 ms 3916 KB Output is correct
5 Correct 22 ms 5456 KB Output is correct
6 Correct 15 ms 3932 KB Output is correct
7 Correct 17 ms 3928 KB Output is correct
8 Correct 23 ms 5728 KB Output is correct
9 Correct 26 ms 5568 KB Output is correct
10 Correct 15 ms 3940 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 248 ms 25288 KB Output is correct
2 Correct 239 ms 24992 KB Output is correct
3 Correct 242 ms 25384 KB Output is correct
4 Correct 227 ms 25072 KB Output is correct
5 Correct 223 ms 25240 KB Output is correct
6 Correct 238 ms 25408 KB Output is correct
7 Correct 286 ms 25520 KB Output is correct
8 Correct 224 ms 25172 KB Output is correct
9 Correct 239 ms 25652 KB Output is correct
10 Correct 235 ms 25860 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2392 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct

Subtask #5
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2392 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2400 KB Output is correct
15 Correct 1 ms 2404 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2392 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2400 KB Output is correct
15 Correct 1 ms 2404 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 1 ms 2652 KB Output is correct
22 Correct 1 ms 2652 KB Output is correct
23 Correct 4 ms 2652 KB Output is correct
24 Correct 1 ms 2652 KB Output is correct
25 Correct 1 ms 2652 KB Output is correct
26 Correct 1 ms 2652 KB Output is correct
27 Correct 1 ms 2676 KB Output is correct
28 Correct 1 ms 2648 KB Output is correct
29 Correct 1 ms 2648 KB Output is correct
30 Correct 2 ms 2652 KB Output is correct

Subtask #7
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 5460 KB Output is correct
2 Correct 24 ms 5712 KB Output is correct
3 Correct 23 ms 5560 KB Output is correct
4 Correct 23 ms 5720 KB Output is correct
5 Correct 26 ms 5724 KB Output is correct
6 Correct 23 ms 5496 KB Output is correct
7 Correct 24 ms 5720 KB Output is correct
8 Correct 24 ms 5724 KB Output is correct
9 Correct 27 ms 5576 KB Output is correct
10 Correct 24 ms 5724 KB Output is correct
11 Correct 15 ms 3928 KB Output is correct
12 Correct 15 ms 3936 KB Output is correct
13 Correct 17 ms 3932 KB Output is correct
14 Correct 15 ms 3916 KB Output is correct
15 Correct 22 ms 5456 KB Output is correct
16 Correct 15 ms 3932 KB Output is correct
17 Correct 17 ms 3928 KB Output is correct
18 Correct 23 ms 5728 KB Output is correct
19 Correct 26 ms 5568 KB Output is correct
20 Correct 15 ms 3940 KB Output is correct
21 Correct 248 ms 25288 KB Output is correct
22 Correct 239 ms 24992 KB Output is correct
23 Correct 242 ms 25384 KB Output is correct
24 Correct 227 ms 25072 KB Output is correct
25 Correct 223 ms 25240 KB Output is correct
26 Correct 238 ms 25408 KB Output is correct
27 Correct 286 ms 25520 KB Output is correct
28 Correct 224 ms 25172 KB Output is correct
29 Correct 239 ms 25652 KB Output is correct
30 Correct 235 ms 25860 KB Output is correct
31 Correct 1 ms 2396 KB Output is correct
32 Correct 1 ms 2396 KB Output is correct
33 Correct 1 ms 2396 KB Output is correct
34 Correct 1 ms 2392 KB Output is correct
35 Correct 1 ms 2396 KB Output is correct
36 Correct 1 ms 2396 KB Output is correct
37 Correct 1 ms 2396 KB Output is correct
38 Correct 1 ms 2396 KB Output is correct
39 Correct 1 ms 2396 KB Output is correct
40 Correct 1 ms 2396 KB Output is correct
41 Correct 1 ms 2396 KB Output is correct
42 Correct 1 ms 2396 KB Output is correct
43 Correct 1 ms 2396 KB Output is correct
44 Correct 1 ms 2400 KB Output is correct
45 Correct 1 ms 2404 KB Output is correct
46 Correct 1 ms 2396 KB Output is correct
47 Correct 1 ms 2396 KB Output is correct
48 Correct 1 ms 2396 KB Output is correct
49 Correct 1 ms 2396 KB Output is correct
50 Correct 1 ms 2396 KB Output is correct
51 Correct 1 ms 2652 KB Output is correct
52 Correct 1 ms 2652 KB Output is correct
53 Correct 4 ms 2652 KB Output is correct
54 Correct 1 ms 2652 KB Output is correct
55 Correct 1 ms 2652 KB Output is correct
56 Correct 1 ms 2652 KB Output is correct
57 Correct 1 ms 2676 KB Output is correct
58 Correct 1 ms 2648 KB Output is correct
59 Correct 1 ms 2648 KB Output is correct
60 Correct 2 ms 2652 KB Output is correct
61 Correct 186 ms 25052 KB Output is correct
62 Correct 133 ms 25692 KB Output is correct
63 Correct 263 ms 25004 KB Output is correct
64 Correct 155 ms 25544 KB Output is correct
65 Correct 248 ms 25320 KB Output is correct
66 Correct 219 ms 25372 KB Output is correct
67 Correct 190 ms 24940 KB Output is correct
68 Correct 264 ms 25540 KB Output is correct
69 Correct 236 ms 24908 KB Output is correct
70 Correct 252 ms 24888 KB Output is correct