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template toBin(n) {
signal input inp;
signal output out[n];
var lc1=0;
for (var i = 0; i<n; i++) {
out[i] <-- (inp >> i) & 1;
out[i] * (out[i] -1 ) === 0;
lc1 += out[i] * 2**i;
}
lc1 === inp;
}
component toBin(3) main;