Submission #833344

#	Time	Username	Problem	Language	Result	Execution time	Memory
833344		vjudge1	Exam (eJOI20_exam)	C++17	12 / 100	16 ms	1876 KiB

exam

#include<bits/stdc++.h>
using namespace std;
#define endl '\n'
#define ll long long
int main(){
	ios::sync_with_stdio(0); cin.tie(0);
	int n;
	cin>>n;
	int a[n+5];
	int b[n+5];
	bool sub2 = true;
	for(int i=1; i<=n; i++) cin>>a[i];
	for(int i=1; i<=n; i++){
		cin>>b[i];
		if(i > 1 && b[i] != b[1]) sub2 = false;
	}
	vector<int> id;
	int on[n+5];
	memset(on, 0, sizeof(on));
	for(int i=1; i<=n; i++){
		if(a[i] == b[i]) id.push_back(i);
	}
	for(auto z: id){
		if(!on[z]){
			on[z] = 1;
			int x = z+1;
			while(x <= n && a[x] <= a[z] && on[x] == 0){
				on[x] = 1;
				x++;
			}
			x = z-1;
			while(x >= 1 && a[x] <= a[z] && on[x] == 0){
				on[x] = 1;
				x--;
			}
		}
	}	
	int cnt = 0;
	for(int i=1; i<=n; i++){
		if(on[i]) cnt++;
	}
	cout<<cnt<<endl; 
	return 0;
}

Compilation message (stderr)

exam.cpp: In function 'int main()':
exam.cpp:11:7: warning: variable 'sub2' set but not used [-Wunused-but-set-variable]
   11 |  bool sub2 = true;
      |       ^~~~

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