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| #include <bits/stdc++.h>
#define fi first #define se second #define si(x) (int)(x.size()) #define all(x) x.begin(),x.end() #define debug cout<<"*******\n"; using namespace std;
typedef pair<int, int> PII;
void solve() { }
signed main() { cin.tie(nullptr), cout.tie(nullptr); ios::sync_with_stdio(false); cout.precision(10); cout << fixed; int T = 1;
while (T--) solve(); return 0; }
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