Submission

Score: 20

User: UNJE0o

Problemset: โชว์ของโลมา

Language: cpp

Time: 1.094 second

Submitted On: 2026-10-12 20:38:26

#include <bits/stdc++.h>
#define en '\n'
using namespace std;

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);cout.tie(NULL);
    
    int n,x,y;cin >> n;
    unsigned long long int m = 1,mx = n*n ,arr[n][n],sum = 0;
    x = 0,y = 0;
    while(m != mx){
        for(int j = x;j < n;j++){
            arr[y][j] = m;
            m+=1;
        }
        y+=1;

        for(int j = n-1;j >= x;j--){
            arr[y][j] = m;
            m+=1;
        }
        y+=1;

        for(int i = y;i < n;i++){
            arr[i][x] = m;
            m+=1;
        }
        x+=1;

        for(int i = n-1;i >= y;i--){
            arr[i][x] = m;
            m+=1;
        }
        x+=1;
    } arr[n-1][n-1] = m;

    // for(int i = 0;i < n;i++){
    //     for(int j = 0;j < n;j++){
    //         cout << arr[i][j] << " ";
    //     }
    //     cout << en;
    // }
    for(int i = 0;i < n;i++){
        sum += arr[n-1][i]%10;
    }

    cout << sum;

}