#include <stdio.h>
#include <stdlib.h>
#define MAX 200
struct Queue {
    int arr[MAX];
    int front,rear;
};
void initQueue(struct Queue *q) {
    q->front = 0;
    q->rear = -1;
}
void enqueue(struct Queue *q, int value) {
    q->rear++;
    q->arr[q->rear] = value;
}
int main() {
    int N,value;
    struct Queue q;
    intQueue(&q);
    if (scanf("%d",&N)!=1||N<1||N>100) {
        printf(":Invalid input\n");
        return 0;
    }
    for (int i=0;i<N;i++) {
        if (scanf("%d",&value) != 1||value<0||value>300) {
            printf("Invaid input\n");
            return 0;
        }
        enqueue(&q, value);
    }
    for (int i=q.front; i<=q.rear;i++) {
        for (int j=i+1;j<=q.rear )
        
    }
    }
    
        }
    }
    }
    
}
}
    
}