// 条件一:长度为奇数if(n%2==0) {puts("No");return0;} // 条件二:前一半字符是 1for(inti =0; i < n/2; ++i)if(s[i] !='1') {puts("No");return0;}// 条件三:中间的字符是 /if(s[n/2] !='/') {puts("No");return0;} // 条件四:后一半字符是 2for(inti = n/2+1...
bool operator < (Node a, Node b){ return a.x < b.x || ((a.x == b.x) && (a.y < b.y)); } vector<Node> p; int main { cin >> n; p.emplace_back((Node){0, 0}); int64 ma = 1, mb = 0; //max (b / a) for (int i = 0, a, b; i < n; i += 1) {...
代码 #include<cstdio>#include<cmath>#include<iostream>usingnamespacestd;intn,F,x[101],y[101],h[101];inlineboolcheck(intX,intY,intH){for(registerinti=1;i<=n;i++)if(((H-abs(X-x[i])-abs(Y-y[i]))<0)?0:H-abs(X-x[i])-abs(Y-y[i]))!=h[i])returnfalse;returntrue; ...
m, mark[maxn];intread() {intx =0, k =1;charc; c =getchar();while(c <'0'|| c >'9') {if(c =='-') k = -1; c =getchar(); }while(c >='0'&& c <='9') x = x *10+ c -'0', c =getchar();returnx *k; ...
inv(); for (int i = 51; i >= 1; -- i) invfac[i - 1] = invfac[i] * i; auto C = [&](int x, int y) { return (x >= y && y >= 0 ? fac[x] * invfac[y] * invfac[x - y] : (Z)0); }; Z sumw = 0; vector<Z> w(n + 1), p(n + 1); for (int...
best_coder(){int a,b;cin>>a>>b;if(b==a*2||b==a*2+1){cout<<"Yes";}else{cout<<"No";}}voidhappy_coder(){}intmain(){// 提升cin、cout效率ios::sync_with_stdio(false);cin.tie(nullptr);cout.tie(nullptr);// 小码匠best_coder();// 最优解// happy_coder();// 返回return...
本篇是OI - Wiki 上关于类欧几里得算法的学习笔记。 Part 1 - 算法内容 这个算法用来在O(logN)的时间内计算: f(a,b,c,n)=∑i=0n⌊ai+bc⌋第一眼像是数论分块,其实发现不好做。 而对于a,b≥c,可将式子化为: ∑i=0n⌊ai+bc⌋=∑i=0n⌊iamodc+⌊ac⌋⋅ci+bmodc+⌊bc...
tie(nullptr); // 小码匠 best_coder(); // 最优解 // happy_coder(); return 0; } ABC335 - E - Non-Decreasing Colorful Path https://atcoder.jp/contests/abc335/tasks/abc335_e 代码分享: 代码语言:javascript 代码运行次数:0 复制Cloud Studio 代码运行 #include <bits/stdc++.h> using ...
return 0; } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. B-Star or Not 代码 AI检测代码解析 #include<bits/stdc++.h> using namespace std; const int N = 1e5 + 10; int t[N], a[N], b[N]; int main(){ int n;
function csrfSafeMethod(method) { // HTTP methods that do not require CSRF protection. return (/^(GET|HEAD|OPTIONS|TRACE)$/.test(method)); } $.ajaxSetup({ crossDomain: false, beforeSend: function(xhr, settings) { if (!csrfSafeMethod(settings.type)) { xhr.setRequestHeader("X-CSRFToken...