Submission #166628

#	Time	Username	Problem	Language	Result	Execution time	Memory
166628		abil	K blocks (IZhO14_blocks)	C++14	53 / 100	1087 ms	4600 KiB

blocks

#include <bits/stdc++.h>

#define fr first
#define sc second
#define pb push_back
#define mk make_pair
#define all(s) s.begin(),s.end()
//#define int long long

using namespace std;

const int N = (1e6 + 12);
const int mod = (1e9 + 7);
const int INF = (0x3f3f3f3f);

int a[N], dp[1012][1012], table[20][1012], n, l[N];

void build(){
	for(int i = 2;i <= n; i++){
		l[i] = l[i / 2] + 1;
	}
	
	for(int i = 1;i <= n; i++){
		table[0][i] = a[i];
	}
	for(int i = 1;i <= l[n]; i++){
		for(int j = 1;j <= n; j++){
			table[i][j] = max(table[i - 1][j], table[i - 1][j + (1 << (i - 1))]);
		}
	}
}

int get(int left,int right){
	int logg = l[right - left + 1];
	return max(table[logg][left], table[logg][right - (1 << logg) + 1]);
}
main()
{
	int k;
	scanf("%d%d", &n, &k);
	for(int i = 1;i <= n; i++){
		scanf("%d", &a[i]);
	}
	build();
	memset(dp, 0x3f3f3f3f,sizeof(dp));
	for(int i = 1;i <= n; i++){
		dp[1][i] = get(1, i);
	}
	for(int i = 2;i <= k; i++){
		for(int j = i;j <= n; j++){
			for(int p = j;p <= n; p++){
				dp[i][p] = min(dp[i][p], dp[i - 1][j - 1] + get(j, p));
			}
		}
	}
	cout << dp[k][n];
}

Compilation message (stderr)

blocks.cpp:37:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main()
      ^
blocks.cpp: In function 'int main()':
blocks.cpp:40:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d", &n, &k);
  ~~~~~^~~~~~~~~~~~~~~~
blocks.cpp:42:8: 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: 0 / 47