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Y2VVbmRlZi4gU3RvcmVzIHRvIHN0cnVjdHMgd2l0aCB2b2xhdGlsZSBtZW1iZXJzCiAgLy8gZG9uJ3QgaGF2ZSBhIHZvbGF0aWxlIHF1YWxpZmllciB3aGVuIGluaXRpYWxpemVkIGFjY29yZGluZyB0byBDKysuIFRoaXMgaXMKICAvLyBmaW5lIGJlY2F1c2Ugc3RhY2stYmFzZWQgdm9sYXRpbGVzIGRvbid0IHJlYWxseSBoYXZlIHZvbGF0aWxlIHNlbWFudGljcwogIC8vIGFueXdheXMsIGFuZCB0aGUgaW5pdGlhbGl6YXRpb24gc2hvdWxkbid0IGJlIG9ic2VydmFibGUuCiAgYXV0byAqU3RydWN0VHkgPSBjYXN0PGxsdm06OlN0cnVjdFR5cGU+KFR5KTsKICBsbHZtOjpTbWFsbFZlY3RvcjxsbHZtOjpDb25zdGFudCAqLCA4PiBTdHJ1Y3QoU3RydWN0VHktPmdldE51bUVsZW1lbnRzKCkpOwogIGZvciAodW5zaWduZWQgRWwgPSAwOyBFbCAhPSBTdHJ1Y3Quc2l6ZSgpOyArK0VsKQogICAgU3RydWN0W0VsXSA9IGluaXRpYWxpemF0aW9uUGF0dGVybkZvcihDR00sIFN0cnVjdFR5LT5nZXRFbGVtZW50VHlwZShFbCkpOwogIHJldHVybiBsbHZtOjpDb25zdGFudFN0cnVjdDo6Z2V0KFN0cnVjdFR5LCBTdHJ1Y3QpOwp9Cg==