oj.uz

Submission #258288

# Submission time Handle Problem Language Result Execution time Memory
258288 2020-08-05T16:11:43 Z karma K blocks (IZhO14_blocks) C++14
100 / 100
 178 ms 3068 KB 
#include <bits/stdc++.h>
#define pb          emplace_back
#define ll          long long
#define fi          first
#define se          second
#define mp          make_pair
//#define int         int64_t

using namespace std;

const int N = int(1e6) + 7;
const int inf = 1e9 + 1;
typedef pair<ll, ll> pii;

struct TNode {
    int x, y, ans;
    TNode() {x = y = ans = inf;}
    TNode(int x, int y): x(x), y(y) {
        ans = x + y;
    }
    void minimize(const TNode& o) {
        x = min(x, o.x);
        ans = min(ans, x + y);
    }
} cur;
int f[2][N], n, k, a[N];
vector<TNode> v;

int32_t main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0), cout.tie(0);
    #define Task        "test"
    if(fopen(Task".inp", "r")) {
        freopen(Task".inp", "r", stdin);
        freopen(Task".out", "w", stdout);
    }
    cin >> n >> k;
    for(int i = 1; i <= n; ++i) {
        cin >> a[i];
        f[1][i] = max(f[1][i - 1], a[i]);
    }
    for(int i = 2; i <= k; ++i) {
        v.clear();
        for(int j = i; j <= n; ++j) {
            cur = TNode(f[(i & 1) ^ 1][j - 1], a[j]);
            while(v.size() && v.back().y <= cur.y) {
                cur.minimize(v.back());
                v.pop_back();
            }
            if(v.size()) cur.ans = min(cur.ans, v.back().ans);
            f[i & 1][j] = cur.ans;
            v.pb(cur);
        }
    }
    cout << f[k & 1][n];
}

Compilation message

blocks.cpp: In function 'int32_t main()':
blocks.cpp:34:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
         freopen(Task".inp", "r", stdin);
         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
blocks.cpp:35:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
         freopen(Task".out", "w", stdout);
         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 0 ms 384 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 0 ms 384 KB Output is correct
14 Correct 0 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 1 ms 384 KB Output is correct

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 0 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 0 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 0 ms 384 KB Output is correct
17 Correct 0 ms 384 KB Output is correct
18 Correct 0 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 1 ms 384 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 0 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct

Subtask #4
47.0 / 47.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 512 KB Output is correct
2 Correct 6 ms 640 KB Output is correct
3 Correct 9 ms 896 KB Output is correct
4 Correct 52 ms 1152 KB Output is correct
5 Correct 150 ms 2176 KB Output is correct
6 Correct 15 ms 2176 KB Output is correct
7 Correct 75 ms 2304 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 17 ms 512 KB Output is correct
15 Correct 2 ms 512 KB Output is correct
16 Correct 5 ms 512 KB Output is correct
17 Correct 6 ms 1024 KB Output is correct
18 Correct 10 ms 1152 KB Output is correct
19 Correct 59 ms 1152 KB Output is correct
20 Correct 178 ms 2176 KB Output is correct
21 Correct 15 ms 2176 KB Output is correct
22 Correct 86 ms 2172 KB Output is correct
23 Correct 12 ms 1792 KB Output is correct
24 Correct 28 ms 2168 KB Output is correct
25 Correct 175 ms 2176 KB Output is correct
26 Correct 1 ms 384 KB Output is correct
27 Correct 1 ms 384 KB Output is correct
28 Correct 16 ms 640 KB Output is correct
29 Correct 2 ms 640 KB Output is correct
30 Correct 5 ms 640 KB Output is correct
31 Correct 9 ms 1024 KB Output is correct
32 Correct 11 ms 1488 KB Output is correct
33 Correct 54 ms 1472 KB Output is correct
34 Correct 157 ms 3068 KB Output is correct
35 Correct 17 ms 3068 KB Output is correct
36 Correct 77 ms 3068 KB Output is correct
37 Correct 2 ms 512 KB Output is correct
38 Correct 15 ms 512 KB Output is correct
39 Correct 1 ms 384 KB Output is correct
40 Correct 1 ms 384 KB Output is correct
41 Correct 1 ms 384 KB Output is correct
42 Correct 1 ms 384 KB Output is correct