제출 #173981

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
173981		tourist	K개의 묶음 (IZhO14_blocks)	C++14	53 / 100	1085 ms	83708 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()

using namespace std;

const int N = 1e5 + 5;

int n, k, a[N];

long long dp[N][105];

vector <pair<int, long long> > vec;

main() {
	cin >> n >> k;
	for (int i = 1; i <= n; i++) {
		scanf("%d", &a[i]);
	}
	memset(dp, 0x3f3f3f3f, sizeof(dp));
	dp[0][0] = 0;
	for (int j = 1; j <= k; j++) {
		vec.clear();
		for (int i = 1; i <= n; i++) {
			long long mn = dp[i - 1][j - 1];
			while (!vec.empty() && vec.back().fr <= a[i]) {
				mn = min(mn, vec.back().sc);
				vec.pop_back();
			}
			vec.pb({a[i], mn});
			mn = 1e18;
			for (auto it : vec)
				mn = min(mn, it.fr + it.sc);
				
			dp[i][j] = mn;
		}
	}	
	cout << dp[n][k]<< endl;
}

컴파일 시 표준 에러 (stderr) 메시지

blocks.cpp:19:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main() {
      ^
blocks.cpp: In function 'int main()':
blocks.cpp:22:8: 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