Change variable s -> x
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@ -25,7 +25,7 @@ a greedy algorithm works.
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As a first example, we consider a problem
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As a first example, we consider a problem
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where we are given a set of coins
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where we are given a set of coins
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and our task is to form a sum of money $s$
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and our task is to form a sum of money $x$
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using the coins.
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using the coins.
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The values of the coins are
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The values of the coins are
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$\{c_1,c_2,\ldots,c_k\}$,
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$\{c_1,c_2,\ldots,c_k\}$,
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@ -34,7 +34,7 @@ What is the minimum number of coins needed?
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For example, if the coins are the euro coins (in cents)
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For example, if the coins are the euro coins (in cents)
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\[\{1,2,5,10,20,50,100,200\}\]
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\[\{1,2,5,10,20,50,100,200\}\]
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and $s=520$,
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and $x=520$,
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we need at least four coins.
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we need at least four coins.
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The optimal solution is to select coins
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The optimal solution is to select coins
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$200+200+100+20$ whose sum is 520.
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$200+200+100+20$ whose sum is 520.
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