#include <cstdio>
#include <cstring>
#include <vector>
using namespace std;

#define NMax 50100

int M, N, viz[NMax], deg[NMax];  vector<int> G[NMax];

void sortare (void) {	
    int i, j, k;
 
    for(i = 1; i <= N; i++)
    {
        for(j = 1; j <= N; j++)
         if(!viz[j] && deg[j] == 0)
         {
            viz[j] = 1, printf("%d ", j);
            for(k = 0; k < G[j].size(); k++)
                deg[ G[j][k] ]--;
            break ;
         }
    }
}


int main (void) {
	
	int i,a,b;
		
    freopen("sortaret.in", "rt", stdin);
    freopen("sortaret.out", "wt", stdout);
	
    scanf("%d %d\n", &N, &M);
    for(i = 1; i <= M; i++)
        scanf("%d %d", &a, &b), G[a].push_back(b), deg[b]++;
		
	sortare();

return 0;
}