ACM:组合数+乘法逆元
使用技能
1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283##河南省2021CCPC 数学期望 (组合数学+乘法逆元)每个技能性质相同，只需求出一个技能的贡献值*m即可；枚举技能使用1--n次的贡献值，对于每个贡献值*m当前技能使用i次，则剩余(m-1)个技能，占用(n-i)个位置，#pragma GCC optimize(3,"Ofast","inline")#pragma comment(linker, "/STACK:1024000000,1024000000")#include<bits/stdc++.h>using namespace std;#define endl '\n'typedef long long ll; ty ...
ACM:线段树（创造乐曲）
创造乐趣
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104#pragma GCC optimize(3,"Ofast","inline")#pragma comment(linker, "/STACK:1024000000,1024000000")#include<bits/stdc++.h>using namespace std;#define endl '\n'typedef long long ll; #define int long long#define ld long doubleconst int N=100010;struct ...
ACM:线段树(2024杭电多校，单峰数列)
[单峰数列]https://acm.hdu.edu.cn/showproblem.php?pid=7463)!
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131#include<bits/stdc++.h>using namespace std;#define endl '\n'#define int long longconst int N=100010;int n,m,a[N];struct node{ int l,r; i ...
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