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F12 + (function(){ 'use strict'; $("#comment_form, #header, #leftmenu, #big_banner, #footer, #blog_post_info_block").remove(); $("#content").css('marg 阅读全文
posted @ 2025-10-31 18:02
miao-jc
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#include <bits/stdc++.h> using namespace std; #define int long long #define endl '\n' #define pii pair<int, int> const int mod = 998244353; const int 阅读全文
posted @ 2025-10-31 17:32
miao-jc
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1. 等差数列求和 // 首项a1,末项an,项数n ll arithmetic_sum(ll a1, ll an, ll n) { return n * (a1 + an) / 2; } // 首项a1,公差d,项数n ll arithmetic_sum(ll a1, ll d, ll n) { 阅读全文
posted @ 2025-10-31 17:27
miao-jc
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