对每一对r e d考虑它对答案的贡献
#pragma GCC optimize("O3") #pragma GCC optimize("unroll-loops") #pragma GCC target("avx,avx2,fma") #include <bits/stdc++.h>
小红是一名热爱字符串算法的程序员。他最近遇到了一个有趣的问题。
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真题模拟赛第四场|Ant|2023.04.04算法岗笔试
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