PTA天梯赛-练习集 L1-009 N个数求和

模拟通分 #include <bits/stdc++.h> using namespace std; #define d(x) cout << (x) << endl typedef long long ll; const int N = 1e2 + 10; const int INF = 0x3f3f3f3f; struct node{ ll x, y; node(ll x,

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