#include <stdio.h>

void DesSort(int arr[], int len) {
    int tmp;
    for (int i=0; i<len-1; i++) {
        for(int j=0; j<len-1-i; j++) {
            if (arr[j]<arr[j+1]) {
                tmp=arr[j];
                arr[j]=arr[j+1];
                arr[j+1]=tmp;
            }
        }
    }
}

int main() {
    int arr[7]={0,};
    int len=7;
    for (int i=0; i<7; i++) {
        scanf("%d",&arr[i]);
    }
    DesSort(arr,len);

    for (int i=0; i<7; i++) {
        printf("%d",arr[i]);
    }
    return 0;
}

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