Submission

Score: 100

User: Zailagend1

Problemset: มุมขวาบน

Language: cpp

Time: 0.004 second

Submitted On: 2026-06-20 18:03:51

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

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<vi> vvi;
typedef vector<vll> vvll;
typedef vector<pii> vpii;
typedef vector<string> vs;
typedef unordered_map<int, int> umii;
typedef unordered_map<ll, ll> umll;
typedef unordered_set<int> usi;

#define pb push_back
#define mp make_pair
#define F first
#define S second
#define all(v) (v).begin(), (v).end()
#define rall(v) (v).rbegin(), (v).rend()
#define sz(v) (int)(v).size()

const int MOD = 1e9 + 7;
const int INF = 1e9;
const ll LINF = 1e18;

template<typename T> void _dbg(T t) { cerr << t; }
template<typename T, typename... Args> void _dbg(T t, Args... args) { cerr << t << ", "; _dbg(args...); }
#ifdef LOCAL
#define debug(...) do { cerr << "[" << #__VA_ARGS__ << "] = ["; _dbg(__VA_ARGS__); cerr << "]" << endl; } while(0)
#else
#define debug(...)
#endif

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    bool enable = false;
    vi left;
    int n;
    cin >> n;
    int j = 1;
    int k = 8;
    int buffer1 = 0;
    int buffer2 = 0;
    for(int i = 2;i<500000;i+=2){
      left.pb(j+k-i);
      j += k;
      k+= 8;
    }
    int z;
    for(int i = 0;i<left.size();i++){
      z = i+1;
      if(n == (left[z]-1)){cout << "Cannot find top-right corner.";break;}
      if(n < left[z] && n > left[i]){cout << left[i];break;}
      else if(n == left[i]){cout << left[i];break;}

     
    }


    

    return 0;
}