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December 10, 2015 06:28
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| void splitdown(int postn) | |
| { | |
| if(postn>1) splitdown(postn>>1); | |
| tree[postn].split(tree[2*postn],tree[2*postn+1]); | |
| } | |
| void update(int postn, node nd) | |
| { | |
| postn += 1<<n; | |
| splitdown(postn>>1); | |
| tree[postn] = nd; | |
| mergeup(postn); | |
| } |
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