結果
問題 | No.2891 Mint |
ユーザー | shkiiii_ |
提出日時 | 2024-09-14 07:34:08 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 54 ms / 2,000 ms |
コード長 | 3,867 bytes |
コンパイル時間 | 2,160 ms |
コンパイル使用メモリ | 201,600 KB |
実行使用メモリ | 5,376 KB |
最終ジャッジ日時 | 2024-09-14 07:34:20 |
合計ジャッジ時間 | 4,731 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge6 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 2 ms
5,248 KB |
testcase_01 | AC | 2 ms
5,376 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | AC | 2 ms
5,376 KB |
testcase_04 | AC | 23 ms
5,376 KB |
testcase_05 | AC | 2 ms
5,376 KB |
testcase_06 | AC | 54 ms
5,376 KB |
testcase_07 | AC | 2 ms
5,376 KB |
testcase_08 | AC | 2 ms
5,376 KB |
testcase_09 | AC | 2 ms
5,376 KB |
testcase_10 | AC | 2 ms
5,376 KB |
testcase_11 | AC | 2 ms
5,376 KB |
testcase_12 | AC | 2 ms
5,376 KB |
testcase_13 | AC | 2 ms
5,376 KB |
testcase_14 | AC | 2 ms
5,376 KB |
testcase_15 | AC | 2 ms
5,376 KB |
testcase_16 | AC | 2 ms
5,376 KB |
testcase_17 | AC | 40 ms
5,376 KB |
testcase_18 | AC | 25 ms
5,376 KB |
testcase_19 | AC | 22 ms
5,376 KB |
testcase_20 | AC | 36 ms
5,376 KB |
testcase_21 | AC | 22 ms
5,376 KB |
testcase_22 | AC | 45 ms
5,376 KB |
testcase_23 | AC | 16 ms
5,376 KB |
testcase_24 | AC | 35 ms
5,376 KB |
testcase_25 | AC | 48 ms
5,376 KB |
testcase_26 | AC | 46 ms
5,376 KB |
testcase_27 | AC | 45 ms
5,376 KB |
testcase_28 | AC | 51 ms
5,376 KB |
testcase_29 | AC | 24 ms
5,376 KB |
testcase_30 | AC | 38 ms
5,376 KB |
testcase_31 | AC | 25 ms
5,376 KB |
testcase_32 | AC | 40 ms
5,376 KB |
testcase_33 | AC | 29 ms
5,376 KB |
testcase_34 | AC | 32 ms
5,376 KB |
testcase_35 | AC | 36 ms
5,376 KB |
testcase_36 | AC | 39 ms
5,376 KB |
testcase_37 | AC | 18 ms
5,376 KB |
testcase_38 | AC | 16 ms
5,376 KB |
testcase_39 | AC | 20 ms
5,376 KB |
testcase_40 | AC | 21 ms
5,376 KB |
testcase_41 | AC | 12 ms
5,376 KB |
testcase_42 | AC | 1 ms
5,376 KB |
testcase_43 | AC | 2 ms
5,376 KB |
testcase_44 | AC | 1 ms
5,376 KB |
testcase_45 | AC | 2 ms
5,376 KB |
testcase_46 | AC | 2 ms
5,376 KB |
testcase_47 | AC | 19 ms
5,376 KB |
testcase_48 | AC | 19 ms
5,376 KB |
testcase_49 | AC | 22 ms
5,376 KB |
testcase_50 | AC | 8 ms
5,376 KB |
testcase_51 | AC | 17 ms
5,376 KB |
testcase_52 | AC | 7 ms
5,376 KB |
testcase_53 | AC | 14 ms
5,376 KB |
testcase_54 | AC | 15 ms
5,376 KB |
testcase_55 | AC | 4 ms
5,376 KB |
testcase_56 | AC | 22 ms
5,376 KB |
ソースコード
#include<bits/stdc++.h> // #include<atcoder/all> // #include<boost/multiprecision/cpp_int.hpp> using namespace std; // using namespace atcoder; // using bint = boost::multiprecision::cpp_int; using ll = long long; using ull = unsigned long long; using ld = long double; using P = pair<ll,ll>; using vi = vector<ll>; using vvi = vector<vi>; using vvvi = vector<vvi>; using ve = vector<vector<int>>; using vb = vector<bool>; using vvb = vector<vb>; #define rep(i,n) for(ll i = 0;i < (ll)n;i++) #define ALL(x) (x).begin(),(x).end() #define sz(c) ((ll)(c).size()) #define LB(A,x) (int)(lower_bound(A.begin(),A.end(),x)-A.begin()) #define UB(A,x) (int)(upper_bound(A.begin(),A.end(),x)-A.begin()) // #define MOD 1000000007 #define MOD 998244353 template<typename T>using min_priority_queue=priority_queue<T,vector<T>,greater<T>>; template<typename T>ostream&operator<<(ostream&os,vector<T>&v){for(int i = 0;i < v.size();i++)os<<v[i]<<(i+1!=v.size()?" ":"");return os;} template<typename T>istream&operator>>(istream&is,vector<T>&v){for(T&in:v)is>>in;return is;} template<typename T1,typename T2>ostream&operator<<(ostream&os,pair<T1,T2>&p){os<<p.first<<" "<<p.second;return os;} template<typename T1,typename T2>istream&operator>>(istream&is,pair<T1,T2>&p){is>>p.first>>p.second;return is;} template<typename T> inline bool chmax(T &a,T b){if(a < b){a = b;return true;}return false;} template<typename T> inline bool chmin(T &a,T b){if(a > b){a = b;return true;}return false;} ld dist(ld x1,ld y1,ld x2, ld y2){return sqrtl((x1-x2)*(x1-x2)+(y1-y2)*(y1-y2));} template< int mod > struct ModInt { int x; ModInt() : x(0) {} ModInt(int64_t y) : x(y >= 0 ? y % mod : (mod - (-y) % mod) % mod) {} ModInt &operator+=(const ModInt &p) { if((x += p.x) >= mod) x -= mod; return *this; } ModInt &operator-=(const ModInt &p) { if((x += mod - p.x) >= mod) x -= mod; return *this; } ModInt &operator*=(const ModInt &p) { x = (int) (1LL * x * p.x % mod); return *this; } ModInt &operator/=(const ModInt &p) { *this *= p.inverse(); return *this; } ModInt operator-() const { return ModInt(-x); } ModInt operator+(const ModInt &p) const { return ModInt(*this) += p; } ModInt operator-(const ModInt &p) const { return ModInt(*this) -= p; } ModInt operator*(const ModInt &p) const { return ModInt(*this) *= p; } ModInt operator/(const ModInt &p) const { return ModInt(*this) /= p; } bool operator==(const ModInt &p) const { return x == p.x; } bool operator!=(const ModInt &p) const { return x != p.x; } ModInt inverse() const { int a = x, b = mod, u = 1, v = 0, t; while(b > 0) { t = a / b; swap(a -= t * b, b); swap(u -= t * v, v); } return ModInt(u); } ModInt pow(int64_t n) const { ModInt ret(1), mul(x); while(n > 0) { if(n & 1) ret *= mul; mul *= mul; n >>= 1; } return ret; } friend ostream &operator<<(ostream &os, const ModInt &p) { return os << p.x; } friend istream &operator>>(istream &is, ModInt &a) { int64_t t; is >> t; a = ModInt< mod >(t); return (is); } static int get_mod() { return mod; } }; using modint = ModInt< MOD >; using mvi = vector<modint>; using mvvi = vector<mvi>; int main(){ ios_base::sync_with_stdio(0), cin.tie(0); ll n,m;cin >> n >> m; ll sq = sqrt(m); modint res = 0; for(ll k = 1;k <= 10*sq;k++){ if(m/k <= sq || k > n)break; res += (m%k); } modint inv = ((modint)2).inverse(); for(ll l = 1;l <= sq;l++){ ll a = m/l,b = m/(l+1)+1; if(b > n || b > a)continue; chmin(a,n); // cout << a << " " << b << " a\n"; res += (m%MOD)*((a-b+1)%MOD)%MOD; modint k = l*((a-b+1)%MOD)%MOD; k = k*((a+b)%MOD);k *= inv; res -= k; } if(n > m)res += (m%MOD)*((n-m)%MOD)%MOD; cout << res << "\n"; return 0; }