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a9e7957 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 | <instance format="XCSP3" type="COP">
<variables>
<array id="x" size="[7]"> 0..49 </array>
</variables>
<constraints>
<intension> eq(x[0],0) </intension>
<ordered>
<list> x[] </list>
<operator> lt </operator>
</ordered>
<allDifferent> sub(x[1],x[0]) sub(x[2],x[0]) sub(x[3],x[0]) sub(x[4],x[0]) sub(x[5],x[0]) sub(x[6],x[0]) sub(x[2],x[1]) sub(x[3],x[1]) sub(x[4],x[1]) sub(x[5],x[1]) sub(x[6],x[1]) sub(x[3],x[2]) sub(x[4],x[2]) sub(x[5],x[2]) sub(x[6],x[2]) sub(x[4],x[3]) sub(x[5],x[3]) sub(x[6],x[3]) sub(x[5],x[4]) sub(x[6],x[4]) sub(x[6],x[5]) </allDifferent>
</constraints>
<objectives>
<minimize> x[6] </minimize>
</objectives>
</instance>
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