oj.uz

Submission #38071

# Submission time Handle Problem Language Result Execution time Memory
38071 2017-12-31T17:30:28 Z nickyrio K blocks (IZhO14_blocks) C++14
100 / 100
 239 ms 45944 KB 
#include <bits/stdc++.h>
#define FOR(i, a, b) for (int i = a; i<= b; ++i)
#define FORD(i, a, b) for (int i = a; i>=b; --i)
#define REP(i, a) for (int i = 0; i<a; ++i)
#define DEBUG(x) { cerr << #x << " = " << x << endl; }
#define Arr(A, l, r) { cerr << #A  << " = "; FOR(_, l, r) cerr << A[_] << ' '; cerr << endl; }
#define N 100100
#define pp pair<int, int>
#define next __next
#define prev __prev
#define __builtin_popcount __builtin_popcountll
#define bit(S, i) (((S) >> i) & 1)
#define IO cin.tie(NULL);cout.tie(NULL);
#define taskname "Test"
using namespace std;

template<class X, class Y> inline void Max(X &x, Y y) { x = x > y ? x : y; }
template<class X, class Y> inline void Min(X &x, Y y) { x = x < y ? x : y; }
/*
dp[i][j] = min(dp[i - 1][k] + RMQ[k + 1][j]);

*/

int n, k, a[N];
int dp[111][N];

stack<int> st;

int main() {
    IO;
    scanf("%d %d", &n, &k);
    FOR(i, 1, n) scanf("%d", &a[i]);
    int mx = -1;
    FOR(i, 1, n) Max(mx, a[i]), dp[1][i] = mx; 
    FOR(j, 2, k) {
        while (!st.empty()) st.pop();
        st.push(j - 1);
        //dp[j][j] = dp[j - 1][j - 1] + a[j];
        FOR(i, j, n) {
            int best = 1e9;
            while (!st.empty() && a[st.top()] <= a[i]) {
                if (st.top() != j - 1) Min(best, dp[j][st.top()] + a[i] - a[st.top()]);
                Min(best, dp[j - 1][st.top()] + a[i]);
                st.pop();
            }
            if (!st.empty()) {
                if (st.top() != j - 1) Min(best, dp[j][st.top()]);
                Min(best, dp[j - 1][st.top()] + a[i]);
            }
            else Min(best, dp[j - 1][j - 1] + a[i]);
            dp[j][i] = best;
          //  cerr << j << ' ' << i << ' ' << best << endl;
            st.push(i);
        }
    }
    printf("%d", dp[k][n]);
}

Compilation message

blocks.cpp: In function 'int main()':
blocks.cpp:31:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d", &n, &k);
                           ^
blocks.cpp:32:36: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     FOR(i, 1, n) scanf("%d", &a[i]);
                                    ^

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 45812 KB Output is correct
2 Correct 0 ms 45812 KB Output is correct
3 Correct 0 ms 45812 KB Output is correct
4 Correct 0 ms 45812 KB Output is correct
5 Correct 0 ms 45812 KB Output is correct
6 Correct 0 ms 45812 KB Output is correct
7 Correct 0 ms 45812 KB Output is correct
8 Correct 0 ms 45812 KB Output is correct
9 Correct 0 ms 45812 KB Output is correct
10 Correct 0 ms 45812 KB Output is correct
11 Correct 0 ms 45812 KB Output is correct
12 Correct 0 ms 45812 KB Output is correct
13 Correct 0 ms 45812 KB Output is correct
14 Correct 0 ms 45812 KB Output is correct
15 Correct 0 ms 45812 KB Output is correct
16 Correct 0 ms 45812 KB Output is correct
17 Correct 0 ms 45812 KB Output is correct
18 Correct 0 ms 45812 KB Output is correct

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 45812 KB Output is correct
2 Correct 0 ms 45812 KB Output is correct
3 Correct 0 ms 45812 KB Output is correct
4 Correct 0 ms 45812 KB Output is correct
5 Correct 0 ms 45812 KB Output is correct
6 Correct 0 ms 45812 KB Output is correct
7 Correct 0 ms 45812 KB Output is correct
8 Correct 0 ms 45812 KB Output is correct
9 Correct 0 ms 45812 KB Output is correct
10 Correct 0 ms 45812 KB Output is correct
11 Correct 0 ms 45812 KB Output is correct
12 Correct 0 ms 45812 KB Output is correct
13 Correct 0 ms 45812 KB Output is correct
14 Correct 0 ms 45812 KB Output is correct
15 Correct 0 ms 45812 KB Output is correct
16 Correct 0 ms 45812 KB Output is correct
17 Correct 0 ms 45812 KB Output is correct
18 Correct 0 ms 45812 KB Output is correct
19 Correct 0 ms 45812 KB Output is correct
20 Correct 0 ms 45812 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 45812 KB Output is correct
2 Correct 0 ms 45812 KB Output is correct
3 Correct 0 ms 45812 KB Output is correct
4 Correct 0 ms 45812 KB Output is correct
5 Correct 0 ms 45812 KB Output is correct
6 Correct 0 ms 45812 KB Output is correct
7 Correct 0 ms 45812 KB Output is correct
8 Correct 0 ms 45812 KB Output is correct
9 Correct 0 ms 45812 KB Output is correct
10 Correct 0 ms 45812 KB Output is correct
11 Correct 0 ms 45812 KB Output is correct
12 Correct 0 ms 45812 KB Output is correct
13 Correct 0 ms 45812 KB Output is correct
14 Correct 0 ms 45812 KB Output is correct
15 Correct 0 ms 45812 KB Output is correct
16 Correct 0 ms 45812 KB Output is correct
17 Correct 0 ms 45812 KB Output is correct
18 Correct 0 ms 45812 KB Output is correct
19 Correct 0 ms 45812 KB Output is correct

Subtask #4
47.0 / 47.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 45812 KB Output is correct
2 Correct 6 ms 45812 KB Output is correct
3 Correct 9 ms 45812 KB Output is correct
4 Correct 56 ms 45812 KB Output is correct
5 Correct 149 ms 45812 KB Output is correct
6 Correct 9 ms 45812 KB Output is correct
7 Correct 79 ms 45812 KB Output is correct
8 Correct 0 ms 45812 KB Output is correct
9 Correct 0 ms 45812 KB Output is correct
10 Correct 0 ms 45812 KB Output is correct
11 Correct 0 ms 45812 KB Output is correct
12 Correct 0 ms 45812 KB Output is correct
13 Correct 0 ms 45812 KB Output is correct
14 Correct 16 ms 45812 KB Output is correct
15 Correct 0 ms 45812 KB Output is correct
16 Correct 6 ms 45812 KB Output is correct
17 Correct 9 ms 45812 KB Output is correct
18 Correct 16 ms 45812 KB Output is correct
19 Correct 69 ms 45812 KB Output is correct
20 Correct 219 ms 45812 KB Output is correct
21 Correct 33 ms 45812 KB Output is correct
22 Correct 99 ms 45812 KB Output is correct
23 Correct 13 ms 45812 KB Output is correct
24 Correct 49 ms 45812 KB Output is correct
25 Correct 199 ms 45812 KB Output is correct
26 Correct 0 ms 45812 KB Output is correct
27 Correct 0 ms 45812 KB Output is correct
28 Correct 16 ms 45812 KB Output is correct
29 Correct 0 ms 45812 KB Output is correct
30 Correct 6 ms 45812 KB Output is correct
31 Correct 9 ms 45812 KB Output is correct
32 Correct 9 ms 45944 KB Output is correct
33 Correct 73 ms 45944 KB Output is correct
34 Correct 239 ms 45944 KB Output is correct
35 Correct 16 ms 45944 KB Output is correct
36 Correct 96 ms 45944 KB Output is correct
37 Correct 0 ms 45812 KB Output is correct
38 Correct 16 ms 45812 KB Output is correct
39 Correct 0 ms 45812 KB Output is correct
40 Correct 0 ms 45812 KB Output is correct
41 Correct 0 ms 45812 KB Output is correct
42 Correct 0 ms 45812 KB Output is correct