罗马数字

题解：打表，，，还犹豫了一会儿 #include<bits/stdc++.h> #define ll long long #define P pair<int,int> #define pb push_back #define lson root << 1 #define INF (int)2e9 + 7 #define maxn (int)1e5 + 7 #define rson root <<

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