Submission #1247825

#	Time	Username	Problem	Language	Result	Execution time	Memory
1247825		free_de_la_zenith	K blocks (IZhO14_blocks)	C++20	53 / 100	1099 ms	82624 KiB

blocks

/**
 *    author:  MINHTPC
 *
**/
#include <bits/stdc++.h>

#define ll long long
#define fi first
#define se second
#define pb push_back
#define all(a) a.begin() , a.end()
#define FOR(i ,a , b) for(int i = a ; i <= b ; ++i)
#define bit(mask,i) ((mask>>i)&1)
#define name "task"
#define lo lower_bound
#define up upper_bound
#define count_bit1(x) __builtin_popcountll(x)
#define count_bit01(x) __builtin_clzll(x)
#define count_bit10(x) __builtin_ctzll(x)

using namespace std;
const int N=1e5+5;
const long long INF=1e18;
long long a[N],n,k,dp[105][N];
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);cout.tie(0);
    if(fopen("umnik.inp","r")) {
        freopen("umnik.inp","r",stdin);
//        freopen("umnik.out","w",stdout);
    }
    memset(dp,60,sizeof dp);
    cin >> n >> k;
    for(int i=1;i<=n;i++) cin >> a[i];
    dp[0][0]=0;
    for(int i=1;i<=n;i++) {
        for(int d=1;d<=k;d++) {
            dp[d][i]=INF;
            long long mx=0;
            for(int j=i;j>=1;j--) {
                mx=max(mx,a[j]);
                dp[d][i]=min(dp[d][i],dp[d-1][j-1]+mx);
            }
        }
    }
    cout << dp[k][n];
}

Compilation message (stderr)

blocks.cpp: In function 'int main()':
blocks.cpp:30:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   30 |         freopen("umnik.inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

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