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답안 #534410

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
534410 2022-03-08T06:45:22 Z idas Feast (NOI19_feast) C++11
100 / 100
 119 ms 12744 KB 
#include <bits/stdc++.h>
#define FOR(i, begin, end) for(int i = (begin); i < (end); i++)
#define FAST_IO ios_base::sync_with_stdio(0); cin.tie(nullptr); cout.tie(nullptr)
#define f first
#define s second
#define pb push_back
#define sz(x) ((int)((x).size()))
#define le(vec) vec[vec.size()-1]
#define all(x) (x).begin(), (x).end()
#define TSTS int ttt; cin >> ttt; while(ttt--) solve()

using namespace std;
typedef pair<int, int> pii;
typedef pair<long long, long long> pll;
typedef pair<long double, long double> pdd;
typedef map<int, int> mii;
typedef vector<int> vi;
typedef long double ld;
typedef long long ll;

const int INF=1e9, MOD=1e9+7, mod=998244353;
const ll LINF=1e18;

void setIO()
{
    FAST_IO;
}

void setIO(string s)
{
    FAST_IO;
    freopen((s+".in").c_str(), "r", stdin);
    freopen((s+".out").c_str(), "w", stdout);
}

#define int long long

const int N=3e5+10;
int n, k;
ll a[N], p[N];
pair<ll, int> dp[N];

void calc(ll x)
{
    //FOR(i, 0, n+1) dp[i]={0,0};
    pair<ll, int> best={0,0};
    FOR(i, 1, n+1)
    {
        dp[i]=max(dp[i-1], {best.f-x+p[i],best.s-1});
        best=max(best, {dp[i].f-p[i],dp[i].s});
    }
}

signed main()
{
    setIO();
    cin >> n >> k;
    FOR(i, 1, n+1) cin >> a[i];
    FOR(i, 1, n+1) p[i]=p[i-1]+a[i];

    ll l=0, r=1e13;
    while(l<r){
        ll m=(l+r)/2;
        calc(m);
        if(-dp[n].s<=k) r=m;
        else l=m+1;
    }

    calc(l);
    ll ans=dp[n].f-dp[n].s*l;
    cout << ans;
}

Compilation message

feast.cpp: In function 'void setIO(std::string)':
feast.cpp:32:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   32 |     freopen((s+".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
feast.cpp:33:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   33 |     freopen((s+".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 59 ms 9400 KB Output is correct
2 Correct 61 ms 9572 KB Output is correct
3 Correct 58 ms 9584 KB Output is correct
4 Correct 60 ms 9504 KB Output is correct
5 Correct 60 ms 9496 KB Output is correct
6 Correct 61 ms 9408 KB Output is correct
7 Correct 59 ms 9360 KB Output is correct
8 Correct 61 ms 9488 KB Output is correct
9 Correct 58 ms 9332 KB Output is correct
10 Correct 58 ms 9528 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 54 ms 9464 KB Output is correct
2 Correct 55 ms 9680 KB Output is correct
3 Correct 54 ms 9420 KB Output is correct
4 Correct 52 ms 9548 KB Output is correct
5 Correct 58 ms 9380 KB Output is correct
6 Correct 49 ms 9444 KB Output is correct
7 Correct 53 ms 9688 KB Output is correct
8 Correct 63 ms 9640 KB Output is correct
9 Correct 61 ms 9472 KB Output is correct
10 Correct 58 ms 9624 KB Output is correct

Subtask #3
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 78 ms 9528 KB Output is correct
2 Correct 78 ms 12352 KB Output is correct
3 Correct 77 ms 12584 KB Output is correct
4 Correct 78 ms 12408 KB Output is correct
5 Correct 94 ms 12480 KB Output is correct
6 Correct 79 ms 12608 KB Output is correct
7 Correct 77 ms 12608 KB Output is correct
8 Correct 80 ms 12484 KB Output is correct
9 Correct 81 ms 12712 KB Output is correct
10 Correct 81 ms 12716 KB Output is correct

Subtask #4
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 1 ms 324 KB Output is correct
3 Correct 1 ms 316 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 320 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 320 KB Output is correct

Subtask #5
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 1 ms 324 KB Output is correct
3 Correct 1 ms 316 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 320 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 320 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 316 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 0 ms 332 KB Output is correct
2 Correct 1 ms 324 KB Output is correct
3 Correct 1 ms 316 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 320 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 320 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 316 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 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 1 ms 328 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 1 ms 332 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 1 ms 352 KB Output is correct
30 Correct 1 ms 360 KB Output is correct

Subtask #7
29.0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 59 ms 9400 KB Output is correct
2 Correct 61 ms 9572 KB Output is correct
3 Correct 58 ms 9584 KB Output is correct
4 Correct 60 ms 9504 KB Output is correct
5 Correct 60 ms 9496 KB Output is correct
6 Correct 61 ms 9408 KB Output is correct
7 Correct 59 ms 9360 KB Output is correct
8 Correct 61 ms 9488 KB Output is correct
9 Correct 58 ms 9332 KB Output is correct
10 Correct 58 ms 9528 KB Output is correct
11 Correct 54 ms 9464 KB Output is correct
12 Correct 55 ms 9680 KB Output is correct
13 Correct 54 ms 9420 KB Output is correct
14 Correct 52 ms 9548 KB Output is correct
15 Correct 58 ms 9380 KB Output is correct
16 Correct 49 ms 9444 KB Output is correct
17 Correct 53 ms 9688 KB Output is correct
18 Correct 63 ms 9640 KB Output is correct
19 Correct 61 ms 9472 KB Output is correct
20 Correct 58 ms 9624 KB Output is correct
21 Correct 78 ms 9528 KB Output is correct
22 Correct 78 ms 12352 KB Output is correct
23 Correct 77 ms 12584 KB Output is correct
24 Correct 78 ms 12408 KB Output is correct
25 Correct 94 ms 12480 KB Output is correct
26 Correct 79 ms 12608 KB Output is correct
27 Correct 77 ms 12608 KB Output is correct
28 Correct 80 ms 12484 KB Output is correct
29 Correct 81 ms 12712 KB Output is correct
30 Correct 81 ms 12716 KB Output is correct
31 Correct 0 ms 332 KB Output is correct
32 Correct 1 ms 324 KB Output is correct
33 Correct 1 ms 316 KB Output is correct
34 Correct 1 ms 332 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Correct 1 ms 332 KB Output is correct
37 Correct 1 ms 332 KB Output is correct
38 Correct 1 ms 320 KB Output is correct
39 Correct 1 ms 332 KB Output is correct
40 Correct 1 ms 320 KB Output is correct
41 Correct 1 ms 332 KB Output is correct
42 Correct 1 ms 316 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 1 ms 332 KB Output is correct
52 Correct 1 ms 332 KB Output is correct
53 Correct 1 ms 332 KB Output is correct
54 Correct 1 ms 328 KB Output is correct
55 Correct 1 ms 332 KB Output is correct
56 Correct 1 ms 332 KB Output is correct
57 Correct 1 ms 332 KB Output is correct
58 Correct 1 ms 332 KB Output is correct
59 Correct 1 ms 352 KB Output is correct
60 Correct 1 ms 360 KB Output is correct
61 Correct 115 ms 12372 KB Output is correct
62 Correct 115 ms 12700 KB Output is correct
63 Correct 88 ms 12356 KB Output is correct
64 Correct 113 ms 12744 KB Output is correct
65 Correct 119 ms 12716 KB Output is correct
66 Correct 112 ms 12488 KB Output is correct
67 Correct 113 ms 12340 KB Output is correct
68 Correct 79 ms 12740 KB Output is correct
69 Correct 79 ms 12440 KB Output is correct
70 Correct 75 ms 12356 KB Output is correct