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Cod sursa(job #469173)
#include <cstdio>
#define DN 20
int n,m,s[DN];
void afisare() {
for(int i=1; i<=m; i++) printf("%d ",s[i]);
printf("\n");
}
void gs(int k) {
if(k-1==m) afisare();
else for(int i=s[k-1+1]; i<=n-m+k; i++) {
s[k]=i;
gs(k+1);
}
}
int main()
{
freopen("submultimi.in","r",stdin);
freopen("submultimi.out","w",stdout);
scanf("%d",&n );
for(m=1; m<=n; m++) gs(1);
return 0;
}