답안 #1107894

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1107894	2024-11-02T09:45:42 Z	alex_2008	Bigger segments (IZhO19_segments)	C++14	컴파일 오류	0 ms	0 KB

segments

#include <iostream>
#define ff first
#define ss second
typedef long long ll;
using namespace std;
const int N = 5e5 + 10;
ll pref[N];
pair <ll, ll> dp[N];
ll dpp[N];
int main() {
	int n;
	cin >> n;
	for (int i = 1; i <= n; i++) {
		cin >> pref[i];
		pref[i] += pref[i - 1];
	}
	dp[0] = { 0, 0 };
	dpp[0] = 0;
	for (int i = 1; i <= n; i++) {
		int ind = upper_bound(dpp, dpp + i, pref[i]) - dpp - 1;
		dp[i] = { dp[ind].first + 1, pref[i] - pref[ind] };
		dpp[i] = dp[i].ss + pref[i];
	}
	cout << dp[n].first << "\n";
}

Compilation message

segments.cpp: In function 'int main()':
segments.cpp:20:13: error: 'upper_bound' was not declared in this scope
   20 |   int ind = upper_bound(dpp, dpp + i, pref[i]) - dpp - 1;
      |             ^~~~~~~~~~~