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int main() { int i, j, s, n; n = getint(); i=2; while(i<=n) { s=0; j=1; while(j<i) { if(i%j == 0) { s=s+j; } j=j+1; } if(s == i) { putint(i); putch(10); } i=i+1; } return 0; }