제출 #671849

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
671849		smartmonky	K blocks (IZhO14_blocks)	C++14	0 / 100	19 ms	41428 KiB

blocks

#include <bits/stdc++.h>
  
#define ff first
#define ss second
#define pb push_back
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
 
using namespace std;
 
const int N = 1e5 + 50;
int dp[N][105];
main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	memset(dp, 0x3f3f, sizeof(dp));
	int n, k;
	cin >> n >> k;
	vector <int> v(n + 1);
	for(int i = 1; i <= n; i++){
		cin >> v[i];
	}
	dp[1][0] = -1e9;
	for(int i = 1; i <= n; i++)dp[1][i] = max(v[i], dp[1][i - 1]);
	for(int i = 2; i <= k; i++){
		deque <pair <int,int> > d;
		for(int j = i; j <= n; j++){
			int prev = dp[i - 1][j - 1];
			while(!d.empty() && d.front().ff < v[j]){
				prev = min(d.front().ss, prev);
				d.pop_back();
			}
			if(d.empty() || v[j] >= d.back().ff && prev + v[j] < d.back().ff + d.back().ss){
				d.push_back({v[j], prev});
			}
			dp[i][j] = d.back().ff + d.back().ss;
		}
	}
	cout << dp[k][n];
}

컴파일 시 표준 에러 (stderr) 메시지

blocks.cpp:13:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   13 | main(){
      | ^~~~
blocks.cpp: In function 'int main()':
blocks.cpp:34:40: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   34 |    if(d.empty() || v[j] >= d.back().ff && prev + v[j] < d.back().ff + d.back().ss){

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