結果
問題 | No.2880 Max Sigma Mod |
ユーザー | t9unkubj |
提出日時 | 2024-09-08 13:01:29 |
言語 | C++23 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 1,917 ms / 3,000 ms |
コード長 | 6,027 bytes |
コンパイル時間 | 3,732 ms |
コンパイル使用メモリ | 262,276 KB |
実行使用メモリ | 6,948 KB |
最終ジャッジ日時 | 2024-09-08 13:01:59 |
合計ジャッジ時間 | 29,842 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge5 |
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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
6,812 KB |
testcase_01 | AC | 2 ms
6,940 KB |
testcase_02 | AC | 3 ms
6,940 KB |
testcase_03 | AC | 2 ms
6,944 KB |
testcase_04 | AC | 2 ms
6,944 KB |
testcase_05 | AC | 1,507 ms
6,944 KB |
testcase_06 | AC | 1,166 ms
6,948 KB |
testcase_07 | AC | 705 ms
6,944 KB |
testcase_08 | AC | 529 ms
6,940 KB |
testcase_09 | AC | 248 ms
6,944 KB |
testcase_10 | AC | 495 ms
6,944 KB |
testcase_11 | AC | 817 ms
6,940 KB |
testcase_12 | AC | 231 ms
6,940 KB |
testcase_13 | AC | 58 ms
6,944 KB |
testcase_14 | AC | 718 ms
6,944 KB |
testcase_15 | AC | 1,914 ms
6,940 KB |
testcase_16 | AC | 1,917 ms
6,944 KB |
testcase_17 | AC | 1,913 ms
6,940 KB |
testcase_18 | AC | 1,916 ms
6,940 KB |
testcase_19 | AC | 1,901 ms
6,940 KB |
testcase_20 | AC | 12 ms
6,940 KB |
testcase_21 | AC | 333 ms
6,940 KB |
testcase_22 | AC | 801 ms
6,940 KB |
testcase_23 | AC | 11 ms
6,940 KB |
testcase_24 | AC | 438 ms
6,944 KB |
testcase_25 | AC | 1,461 ms
6,944 KB |
testcase_26 | AC | 1,561 ms
6,940 KB |
testcase_27 | AC | 1,529 ms
6,940 KB |
testcase_28 | AC | 1,766 ms
6,944 KB |
testcase_29 | AC | 564 ms
6,944 KB |
testcase_30 | AC | 2 ms
6,944 KB |
testcase_31 | AC | 2 ms
6,940 KB |
testcase_32 | AC | 2 ms
6,940 KB |
testcase_33 | AC | 2 ms
6,944 KB |
testcase_34 | AC | 2 ms
6,944 KB |
testcase_35 | AC | 2 ms
6,940 KB |
testcase_36 | AC | 2 ms
6,940 KB |
testcase_37 | AC | 2 ms
6,940 KB |
testcase_38 | AC | 2 ms
6,940 KB |
testcase_39 | AC | 2 ms
6,940 KB |
testcase_40 | AC | 2 ms
6,944 KB |
testcase_41 | AC | 2 ms
6,944 KB |
testcase_42 | AC | 2 ms
6,940 KB |
testcase_43 | AC | 2 ms
6,940 KB |
testcase_44 | AC | 2 ms
6,940 KB |
testcase_45 | AC | 2 ms
6,940 KB |
testcase_46 | AC | 2 ms
6,940 KB |
testcase_47 | AC | 2 ms
6,944 KB |
testcase_48 | AC | 2 ms
6,944 KB |
testcase_49 | AC | 2 ms
6,944 KB |
ソースコード
#ifdef t9unkubj #include"template.h" //#include"template_no_debug.h" #else #undef _GLIBCXX_DEBUG #pragma GCC optimize("O3") #define dbg(...) 199958 using namespace std; #include<bits/stdc++.h> using uint=unsigned; using ll=long long; using ull=unsigned long long; using ld=long double; using pii=pair<int,int>; using pll=pair<ll,ll>; template<class T>using vc=vector<T>; template<class T>using vvc=vc<vc<T>>; template<class T>using vvvc=vvc<vc<T>>; using vi=vc<int>; using vvi=vc<vi>; using vvvi=vc<vvi>; using vl=vc<ll>; using vvl=vc<vl>; using vvvl=vc<vvl>; template<class T>using smpq=priority_queue<T,vector<T>,greater<T>>; template<class T>using bipq=priority_queue<T>; #define rep(i,n) for(ll i=0;i<(ll)(n);i++) #define REP(i,j,n) for(ll i=(j);i<(ll)(n);i++) #define DREP(i,n,m) for(ll i=(n);i>=(m);i--) #define drep(i,n) for(ll i=((n)-1);i>=0;i--) #define all(x) x.begin(),x.end() #define rall(x) x.rbegin(),x.rend() #define mp make_pair #define pb push_back #define eb emplace_back #define fi first #define se second #define is insert #define bg begin() #define ed end() void scan(int&a) { cin >> a; } void scan(ll&a) { cin >> a; } void scan(string&a) { cin >> a; } void scan(char&a) { cin >> a; } void scan(uint&a) { cin >> a; } void scan(ull&a) { cin >> a; } void scan(bool&a) { cin >> a; } void scan(ld&a){ cin>> a;} template<class T> void scan(vector<T>&a) { for(auto&x:a) scan(x); } void read() {} template<class Head, class... Tail> void read(Head&head, Tail&... tail) { scan(head); read(tail...); } #define INT(...) int __VA_ARGS__; read(__VA_ARGS__); #define LL(...) ll __VA_ARGS__; read(__VA_ARGS__); #define ULL(...) ull __VA_ARGS__; read(__VA_ARGS__); #define STR(...) string __VA_ARGS__; read(__VA_ARGS__); #define CHR(...) char __VA_ARGS__; read(__VA_ARGS__); #define DBL(...) double __VA_ARGS__; read(__VA_ARGS__); #define LD(...) ld __VA_ARGS__; read(__VA_ARGS__); #define VC(type, name, ...) vector<type> name(__VA_ARGS__); read(name); #define VVC(type, name, size, ...) vector<vector<type>> name(size, vector<type>(__VA_ARGS__)); read(name); void print(int a) { cout << a; } void print(ll a) { cout << a; } void print(string a) { cout << a; } void print(char a) { cout << a; } void print(uint a) { cout << a; } void print(bool a) { cout << a; } void print(ull a) { cout << a; } void print(double a) { cout << a; } void print(ld a){ cout<< a; } template<class T> void print(vector<T>a) { for(int i=0;i<(int)a.size();i++){if(i)cout<<" ";print(a[i]);}cout<<endl;} void PRT() { cout <<endl; return ; } template<class T> void PRT(T a) { print(a); cout <<endl; return; } template<class Head, class... Tail> void PRT(Head head, Tail ... tail) { print(head); cout << " "; PRT(tail...); return; } template<class T,class F> bool chmin(T &x, F y){ if(x>y){ x=y; return true; } return false; } template<class T, class F> bool chmax(T &x, F y){ if(x<y){ x=y; return true; } return false; } void YesNo(bool b){ cout<<(b?"Yes":"No")<<endl; } void Yes(){ cout<<"Yes"<<endl; } void No(){ cout<<"No"<<endl; } template<class T> int popcount(T n){ return __builtin_popcountll(n); } template<class T> T sum(vc<T>&a){ return accumulate(all(a),T(0)); } template<class T> T max(vc<T>&a){ return *max_element(all(a)); } template<class T> T min(vc<T>&a){ return *min_element(all(a)); } template<class T> void unique(vc<T>&a){ a.erase(unique(all(a)),a.end()); } vvi readgraph(int n,int m,int off = -1){ vvi g(n); rep(i, m){ int u,v; cin>>u>>v; u+=off,v+=off; g[u].push_back(v); g[v].push_back(u); } return g; } vvi readtree(int n,int off=-1){ return readgraph(n,n-1,off); } template<class T> vc<T> presum(vc<T> &a){ vc<T> ret(a.size()+1); rep(i,a.size())ret[i+1]=ret[i]+a[i]; return ret; } template<class T, class F> vc<T> &operator+=(vc<T> &a,F b){ for (auto&v:a)v += b; return a; } template<class T, class F> vc<T> &operator-=(vc<T>&a,F b){ for (auto&v:a)v-=b; return a; } template<class T, class F> vc<T> &operator*=(vc<T>&a,F b){ for (auto&v:a)v*=b; return a; } #endif double pass_time=0; //Σ{0<=i<=n-1}floor((a*i+b)/m) //基本的なアイデアは寄与を考えて小さいケースへ互除法的に帰着するというもの template<class T=long long> //a*b+m,n^2がオーバーフローしないように! //つまりa=b=1e9などでintにしたらダメ T floor_sum(T n,T m,T a,T b){ if(a==0)return b/m*n; T ans=0; if(a>=m){ ans+=(n*(n-1))/2*(a/m); a%=m; } if(b>=m){ ans+=n*(b/m); b%=m; } T y=(a*n+b)/m; T z=(a*n+b)%m; if(y==0)return ans; return floor_sum(y,a,m,z)+ans; } #define int ll ll sm(ll l){ return (l*(l+1))/2; } ll solve(ll n,ll m){ ll ans=0; for(int i=1;i<=n;i++){ ll now=0; ll last=0; for(int j=1;j*j<=i&&j<=m;j++){ now+=ll(i/j)*j; last=i/j; } for(int j=1;j<last;j++){ int l=i/(j+1),r=i/j; //(l,r] chmin(r,m); chmin(r,i); if(l>=r)continue; chmax(l,0); ll w=r-l; dbg(l,r); now+=(sm(r)-sm(l))*j; } //[M+1,n] chmax(ans,ll(i)*m-now); } return ans; } ll brute(ll n,ll m){ ll ans=0; REP(i,1,n+1){ ll res=0; REP(j,1,m+1){ res+=i%j; } chmax(ans,res); } return ans; } signed main(){ #ifdef t9unkubj freopen("input.txt", "r", stdin); freopen("output.txt", "w", stdout); #endif cin.tie(0)->sync_with_stdio(0); pass_time=clock(); int t=1; //cin>>t; /*while(t++){ int n=(rand()%int(200))+1,m=rand()%int(200)+1; if(solve(n,m)!=brute(n,m)){ dbg(n,m,solve(n,m),brute(n,m)); return 0; } }*/ INT(n,m); PRT(solve(n,m)); pass_time=clock()-pass_time; dbg(pass_time/CLOCKS_PER_SEC); }