aljidae alharami10*10=100.
1010*1010=1020100.
...........................
............................
100
1020100
10203020100
102030403020100
1020304050403020100
10203040506050403020100
102030405060706050403020100
1020304050607080706050403020100
10203040506070809080706050403020100
...........................................................
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.................................................................. benabderrahmane.