Submission #91380

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
91380	2018-12-27 09:23:08	Just_Solve_The_Problem	K개의 묶음 (IZhO14_blocks)	C++11	100 / 100	168 ms	13668 KiB

blocks

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
#include <bits/stdc++.h>
using namespace std;
const int N = (int)1e5 + 7;
const int inf = (int)1e9 + 7;
int n, k;
int dp[2][N];
int a[N];
main() {
  scanf("%d %d", &n, &k);
  for (int i = 1; i <= n; i++) {
    scanf("%d", &a[i]);
  }
  stack < pair < int, int > > st;
  for (int i = 1; i <= n; i++) {
    dp[1][i] = max(dp[1][i - 1], a[i]);
  }
  for (int i = 2; i <= k; i++) {
    while (!st.empty()) st.pop();
    st.push({dp[i & 1 ^ 1][i - 1], a[i]});
    dp[i & 1][i] = dp[i & 1 ^ 1][i - 1] + a[i];
    for (int j = i + 1; j <= n; j++) {
      int c = dp[i & 1 ^ 1][j - 1];
      while (!st.empty() && st.top().second <= a[j]) {
        c = min(c, st.top().first);
        st.pop();
      }
      if (st.empty() || st.top().first + st.top().second > c + a[j]) {
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Compilation message (stderr)

blocks.cpp:11:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main() {
      ^
blocks.cpp: In function 'int main()':
blocks.cpp:22:17: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
   st.push({dp[i & 1 ^ 1][i - 1], a[i]});
               ~~^~~
blocks.cpp:23:23: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
   dp[i & 1][i] = dp[i & 1 ^ 1][i - 1] + a[i];
                     ~~^~~
blocks.cpp:25:17: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
    int c = dp[i & 1 ^ 1][j - 1];
               ~~^~~
blocks.cpp:12:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d", &n, &k);
  ~~~~~^~~~~~~~~~~~~~~~~
blocks.cpp:14:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &a[i]);
   ~~~~~^~~~~~~~~~~~~

• Subtask 1: 14 / 14
• Subtask 2: 18 / 18
• Subtask 3: 21 / 21
• Subtask 4: 47 / 47