15 lines
178 B
C++
15 lines
178 B
C++
#include <iostream>
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#include <vector>
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using namespace std;
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//三种情况，完全在左边，完全在右边，跨越中间
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vector<int> arr;
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int dfs(int l, int r){
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}
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int main(){
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return 0;
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}
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