03 2025 档案
坐标与图形
摘要:https://codeforces.com/contest/2072/problem/E #include<bits/stdc++.h> using namespace std; #define endl '\n' using ll = long long; using pii = pair<in
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区间和(新构造的区间和)
摘要:https://www.luogu.com.cn/problem/T576143?contestId=233561 #include<bits/stdc++.h> using namespace std; #define endl '\n' using ll = long long; using p
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(对于所有的j)异或
摘要:https://www.luogu.com.cn/problem/T575379?contestId=233561 #include<bits/stdc++.h> using namespace std; #define endl '\n' using ll = long long; using p
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