Submission #993870

#	Time	Username	Problem	Language	Result	Execution time	Memory
993870		TranThuMinh	K blocks (IZhO14_blocks)	C++17	53 / 100	1 ms	992 KiB

blocks

#include<bits/stdc++.h>

#define int long long

using namespace std;

const int N = 1e3 + 5,
          K = 105,
          INF = 1e17;

int n, k;
int a[N];
int f[N][K], ma[N][N];

signed main() {
  cin.tie(0)->sync_with_stdio(0);
  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];

  for(int i = 1; i <= n; ++i) {
    ma[i][i] = a[i];
    for(int j = i + 1; j <= n; ++j) ma[i][j] = max(ma[i][j - 1], a[j]);
  }

  for(int i = 0; i <= n; ++i)
    for(int j = 0; j <= k; ++j) f[i][j] = INF;

  f[0][0] = 0;

  for(int i = 1; i <= n; ++i) {
    for(int o = 1; o <= k; ++o) {
      for(int j = 1; j <= i; ++j) f[i][o] = min(f[i][o], f[j - 1][o - 1] + ma[j][i]);
    }
  }

  cout << f[n][k];
}

Compilation message (stderr)

blocks.cpp: In function 'int main()':
blocks.cpp:18:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   18 |     freopen("task.inp", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
blocks.cpp:19:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   19 |     freopen("task.out", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 14 / 14
• Subtask 2: 18 / 18
• Subtask 3: 21 / 21
• Subtask 4: 0 / 47