Submission #833261

#	Time	Username	Problem	Language	Result	Execution time	Memory
833261		vjudge1	Exam (eJOI20_exam)	C++17	12 / 100	30 ms	5716 KiB

exam

#include<bits/stdc++.h>
using namespace std;

#define For(i, n) for (int i = 0; i < n; i++)
#define Each(x, v) for (auto x : v)
#define pb push_back

const int MAXN = 1e5;
int N, H[MAXN + 5], T[MAXN + 5];

bool ceksubsoal2() {
	int pivot = T[0];
	for (int i = 1; i < N; i++) {
		if (T[i] != T[0]) {
			return false;
		}
	}
	return true;
}

void subsoal2() {
	int target = T[0];
	vector <int> pos;
	set <int> ans;
	for (int i = 0; i < N; i++) {
		if (H[i] == target) {
			pos.pb(i);
			ans.insert(i);
		}
	}
	Each (x, pos) {
		for (int i = x - 1; i >= 0; i--) {
			if (H[i] < H[x]) ans.insert(i);
			else break;
		}
		for (int i = x + 1; i < N; i++) {
			if (H[i] < H[x]) ans.insert(i);
			else break;
		}
	}
	cout << (int) ans.size() << endl;
}

int main() {
	ios_base::sync_with_stdio(false);
	cin.tie(0); cout.tie(0);
	cin >> N;
	For (i, N) cin >> H[i];
	For (i, N) cin >> T[i];
	if (ceksubsoal2()) subsoal2();
}

Compilation message (stderr)

exam.cpp: In function 'bool ceksubsoal2()':
exam.cpp:12:6: warning: unused variable 'pivot' [-Wunused-variable]
   12 |  int pivot = T[0];
      |      ^~~~~

• Subtask 1: 0 / 14
• Subtask 2: 12 / 12
• Subtask 3: 0 / 13
• Subtask 4: 0 / 23
• Subtask 5: 0 / 16
• Subtask 6: 0 / 22