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답안 #825826

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
825826 2023-08-15T08:34:51 Z nasam Feast (NOI19_feast) C++17
100 / 100
 96 ms 2680 KB 
#include <bits/stdc++.h>
#define ll long long
#define FOR(i,a,b) for (int i = (a), _b = (b); i <= _b; i++)
#define FOD(i,b,a) for (int i = (b), _a = (a); i >= _a; i--)
#define FORE(i, v) for (__typeof((v).begin()) i = (v).begin(); i != (v).end(); i++)
#define ALL(v) (v).begin(), (v).end()
#define BIT(x, i) (((x) >> (i)) & 1)
#define MASK(i) (1LL << (i))
#define CNTBIT(x) __builtin_popcount(x)
#define fi first
#define se second
#define pb push_back
#define eb emplace_back
#define left ___left
#define right ___right
#define pii pair<int, int>
#define pll pair<ll, ll>
#define DEBUG(n, a) FOR (i, 1, n) cout << a[i] << ' '; cout << endl;
#define lob lower_bound // >=
#define upb upper_bound // >
#define endl "\n"
#define NAME "main"

using namespace std;

template<class X, class Y> bool maximize(X &x, Y y){ if (x < y){ x = y; return true; } return false; }
template<class X, class Y> bool minimize(X &x, Y y){ if (x > y){ x = y; return true; } return false; }

#define  gogobruhbruh  ios_base::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr);
#define  file(name)  if (fopen (name".inp", "r")) { freopen (name".inp", "r", stdin); freopen (name".out", "w", stdout); }

const int MOD = 1e9 + 7;

void add(int &a, int b){ if ((a += b) >= MOD) a -= MOD; }
int sub(int a, int b){ if ((a -= b) < 0) a += MOD; return a; }
int muti(int a, int b){ return (1LL * a * b) % MOD; }
int Pow(int x, int y){ int res = 1; for (; y; y >>= 1){ if (y & 1) res = muti(res, x); x = muti(x, x); } return res; }

const int MAX = 3e5 + 7;
const ll INF = 1e18 + 5;

int num, lim;
ll pre[MAX], dp[MAX], left, right;

#define state pair<ll, int>

void maxx(state &a, state b, ll val, bool ok){
    b.fi += val; b.se += ok;
    if (a.fi < b.fi)
        a = b;
}

state calc(ll cost){
    state Max, res;
    Max = res = {0, 0};
    FOR (i, 1, num){
        maxx(res, Max, pre[i] + cost, 1);
        maxx(Max, res, -pre[i], 0);
    }
    return res;
}

void solve(){
    left = -left; right = 0;
    ll res = 0;
    while (left <= right){
        ll mid = (left + right) >> 1;
        auto[cost, k] = calc(mid);
        if (k <= lim){
            left = mid + 1;
            res = cost - mid * k;
        }else
            right = mid - 1;
    }
    cout << res;
}

void read(){
    cin >> num >> lim;
    ll Min = 0;
    FOR (i, 1, num)
        cin >> pre[i],
        pre[i] += pre[i - 1],
        maximize(left, pre[i] - Min),
        minimize(Min, pre[i]);
}

int main(){
    gogobruhbruh;
    file("main");
    int test = 1;
//    cin >> test;
    while (test--)
        read(),
        solve();
}

Compilation message

feast.cpp: In function 'int main()':
feast.cpp:30:61: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   30 | #define  file(name)  if (fopen (name".inp", "r")) { freopen (name".inp", "r", stdin); freopen (name".out", "w", stdout); }
      |                                                     ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
feast.cpp:90:5: note: in expansion of macro 'file'
   90 |     file("main");
      |     ^~~~
feast.cpp:30:95: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   30 | #define  file(name)  if (fopen (name".inp", "r")) { freopen (name".inp", "r", stdin); freopen (name".out", "w", stdout); }
      |                                                                                       ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
feast.cpp:90:5: note: in expansion of macro 'file'
   90 |     file("main");
      |     ^~~~

Subtask #1
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 56 ms 2584 KB Output is correct
2 Correct 47 ms 2628 KB Output is correct
3 Correct 40 ms 2552 KB Output is correct
4 Correct 49 ms 2560 KB Output is correct
5 Correct 56 ms 2624 KB Output is correct
6 Correct 39 ms 2480 KB Output is correct
7 Correct 39 ms 2588 KB Output is correct
8 Correct 41 ms 2628 KB Output is correct
9 Correct 39 ms 2592 KB Output is correct
10 Correct 40 ms 2516 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 39 ms 2540 KB Output is correct
2 Correct 25 ms 2608 KB Output is correct
3 Correct 25 ms 2612 KB Output is correct
4 Correct 29 ms 2516 KB Output is correct
5 Correct 39 ms 2592 KB Output is correct
6 Correct 28 ms 2544 KB Output is correct
7 Correct 34 ms 2680 KB Output is correct
8 Correct 47 ms 2532 KB Output is correct
9 Correct 39 ms 2516 KB Output is correct
10 Correct 25 ms 2620 KB Output is correct

Subtask #3
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 50 ms 2632 KB Output is correct
2 Correct 53 ms 2604 KB Output is correct
3 Correct 58 ms 2628 KB Output is correct
4 Correct 49 ms 2520 KB Output is correct
5 Correct 48 ms 2624 KB Output is correct
6 Correct 48 ms 2644 KB Output is correct
7 Correct 49 ms 2528 KB Output is correct
8 Correct 49 ms 2508 KB Output is correct
9 Correct 49 ms 2644 KB Output is correct
10 Correct 49 ms 2592 KB Output is correct

Subtask #4
10.0 / 10.0

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

Subtask #5
11.0 / 11.0

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

Subtask #6
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 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 1 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 340 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 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 1 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 56 ms 2584 KB Output is correct
2 Correct 47 ms 2628 KB Output is correct
3 Correct 40 ms 2552 KB Output is correct
4 Correct 49 ms 2560 KB Output is correct
5 Correct 56 ms 2624 KB Output is correct
6 Correct 39 ms 2480 KB Output is correct
7 Correct 39 ms 2588 KB Output is correct
8 Correct 41 ms 2628 KB Output is correct
9 Correct 39 ms 2592 KB Output is correct
10 Correct 40 ms 2516 KB Output is correct
11 Correct 39 ms 2540 KB Output is correct
12 Correct 25 ms 2608 KB Output is correct
13 Correct 25 ms 2612 KB Output is correct
14 Correct 29 ms 2516 KB Output is correct
15 Correct 39 ms 2592 KB Output is correct
16 Correct 28 ms 2544 KB Output is correct
17 Correct 34 ms 2680 KB Output is correct
18 Correct 47 ms 2532 KB Output is correct
19 Correct 39 ms 2516 KB Output is correct
20 Correct 25 ms 2620 KB Output is correct
21 Correct 50 ms 2632 KB Output is correct
22 Correct 53 ms 2604 KB Output is correct
23 Correct 58 ms 2628 KB Output is correct
24 Correct 49 ms 2520 KB Output is correct
25 Correct 48 ms 2624 KB Output is correct
26 Correct 48 ms 2644 KB Output is correct
27 Correct 49 ms 2528 KB Output is correct
28 Correct 49 ms 2508 KB Output is correct
29 Correct 49 ms 2644 KB Output is correct
30 Correct 49 ms 2592 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 1 ms 212 KB Output is correct
36 Correct 1 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 1 ms 212 KB Output is correct
41 Correct 0 ms 212 KB Output is correct
42 Correct 0 ms 340 KB Output is correct
43 Correct 0 ms 212 KB Output is correct
44 Correct 0 ms 212 KB Output is correct
45 Correct 0 ms 212 KB Output is correct
46 Correct 0 ms 340 KB Output is correct
47 Correct 0 ms 212 KB Output is correct
48 Correct 0 ms 340 KB Output is correct
49 Correct 0 ms 212 KB Output is correct
50 Correct 0 ms 212 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 1 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 76 ms 2516 KB Output is correct
62 Correct 96 ms 2576 KB Output is correct
63 Correct 61 ms 2524 KB Output is correct
64 Correct 79 ms 2640 KB Output is correct
65 Correct 86 ms 2588 KB Output is correct
66 Correct 82 ms 2632 KB Output is correct
67 Correct 85 ms 2600 KB Output is correct
68 Correct 50 ms 2644 KB Output is correct
69 Correct 74 ms 2596 KB Output is correct
70 Correct 47 ms 2572 KB Output is correct