1-1. 음계 판별하기 (백준 2920)

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#include <iostream>
using namespace std;

int main(){
    int a[8];

    for(int i = 0 ; i < 8 ; i++)
        cin >> a[i];

    if(a[0] == 1){
        for(int i = 1 ; i < 8 ; i++){
            if(a[i] != ( a[i-1] + 1 ) ) {
                cout << "mixed" << endl;
                return 0;
            }
        }
        cout << "ascending" << endl;
    }
    else if(a[0] == 8){
        for(int i = 1 ; i < 8 ; i++){
            if(a[i] != ( a[i-1] - 1 ) ) {
                cout << "mixed" << endl;
                return 0;
            }
        }
        cout << "descending" << endl;
    }
    else cout << "mixed" << endl;
    return 0;
}

https://www.acmicpc.net/problem/2920

2920번: 음계