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

#define MAXN 50100
#define pb push_back

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


void solveGraph(){
    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;
            }

        }
    }
}

void readData(){
    scanf("%d %d\n", &N, &M);
    int a, b;
    for(int i = 0; i < M; i++){
        scanf("%d %d", &a, &b), G[a].pb(b), deg[b]++;
    }
}

int main(){
    
    freopen("sortaret.in", "rt", stdin);
    freopen("sortaret.out", "wt", stdout);
 
    readData();
    solveGraph();

}