Submission #61824954

Source Code Expand

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
#include<bits/stdc++.h>
#define int long long
#define For(i, a, b) for(int i = (a); i <= (b); i++)
#define Rof(i, a, b) for(int i = (a); i >= (b); i--)
using namespace std;
const int N = 5e5 + 5;
int n, ans;
void Solve(){
  cin >> n;
  For(i, 1, n - 1) ans += floor(sqrt(n * n - pow(1.0 * i + 0.5, 2)) - 0.5);
  ans = ans * 4 + 4 * n - 3;
  cout << ans << '\n';
}
signed main(){
  cin.tie(0)->sync_with_stdio(0);
  int T = 1; //cin >> T;
  while(T--) Solve();
  return 0;
}
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

#include<bits/stdc++.h>
#define int long long
#define For(i, a, b) for(int i = (a); i <= (b); i++)
#define Rof(i, a, b) for(int i = (a); i >= (b); i--)
using namespace std;
const int N = 5e5 + 5;
int n, ans;
void Solve(){
	cin >> n;
	For(i, 1, n - 1) ans += floor(sqrt(n * n - pow(1.0 * i + 0.5, 2)) - 0.5);
	ans = ans * 4 + 4 * n - 3;
	cout << ans << '\n';
}
signed main(){
	cin.tie(0)->sync_with_stdio(0);
	int T = 1; //cin >> T;
	while(T--) Solve();
	return 0;
}

Submission Info

Judge Result