結果

問題 No.1546 [Cherry 2nd Tune D] 思ったよりも易しくない
ユーザー kiyoshi0205
提出日時 2021-06-11 23:17:20
言語 C++17(gcc12)
(gcc 12.3.0 + boost 1.87.0)
結果
AC  
実行時間 214 ms / 2,000 ms
コード長 3,076 bytes
コンパイル時間 23,286 ms
コンパイル使用メモリ 355,308 KB
最終ジャッジ日時 2025-01-22 07:01:36
ジャッジサーバーID
(参考情報)
judge5 / judge5
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ファイルパターン 結果
other AC * 53
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

#pragma GCC target("avx")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#include<bits/stdc++.h>
using namespace std;
using ll=long long;
using datas=pair<ll,ll>;
using ddatas=pair<long double,long double>;
using tdata=pair<ll,datas>;
using vec=vector<ll>;
using mat=vector<vec>;
using pvec=vector<datas>;
using pmat=vector<pvec>;
#define For(i,a,b) for(i=a;i<(ll)b;++i)
#define bFor(i,b,a) for(i=b,--i;i>=(ll)a;--i)
#define rep(i,N) For(i,0,N)
#define rep1(i,N) For(i,1,N)
#define brep(i,N) bFor(i,N,0)
#define brep1(i,N) bFor(i,N,1)
#define all(v) (v).begin(),(v).end()
#define allr(v) (v).rbegin(),(v).rend()
#define vsort(v) sort(all(v))
#define vrsort(v) sort(allr(v))
#define uniq(v) vsort(v);(v).erase(unique(all(v)),(v).end())
#define endl "\n"
#define popcount __builtin_popcountll
#define eb emplace_back
#define print(x) cout<<x<<endl
#define printyes print("Yes")
#define printno print("No")
#define printYES print("YES")
#define printNO print("NO")
#define output(v) do{bool f=0;for(auto outi:v){cout<<(f?" ":"")<<outi;f=1;}cout<<endl;}while(0)
#define matoutput(v) do{for(auto outimat:v)output(outimat);}while(0)
// constexpr ll mod=1000000007;
constexpr ll mod=998244353;
constexpr ll inf=1LL<<60;
constexpr long double eps=1e-9;
const long double PI=acosl(-1);
template<class T,class E> ostream& operator<<(ostream& os,const pair<T,E>& p){return os<<"("<<p.first<<","<<p.second<<")";}
template<class T> ostream& operator<<(ostream& os,const vector<T>& v){
os<<"{";bool f=false;
for(auto& x:v){if(f)os<<",";os<<x;f=true;}
os<<"}";
return os;
}
template<class T> ostream& operator<<(ostream& os,const set<T>& v){
os<<"{";bool f=false;
for(auto& x:v){if(f)os<<",";os<<x;f=true;}
os<<"}";
return os;
}
template<class T> ostream& operator<<(ostream& os,const multiset<T>& v){
os<<"{";bool f=false;
for(auto& x:v){if(f)os<<",";os<<x;f=true;}
os<<"}";
return os;
}
template<class T,class E> ostream& operator<<(ostream& os,const map<T,E>& v){
os<<"{";bool f=false;
for(auto& x:v){if(f)os<<",";os<<x;f=true;}
os<<"}";
return os;
}
template<class T> inline bool chmax(T& a,const T b){bool x=a<b;if(x)a=b;return x;}
template<class T> inline bool chmin(T& a,const T b){bool x=a>b;if(x)a=b;return x;}
#ifdef DEBUG
void debugg(){cout<<endl;}
template<class T,class... Args>void debugg(const T& x,const Args&... args){cout<<" "<<x;debugg(args...);}
#define debug(...) cout<<__LINE__<<" ["<<#__VA_ARGS__<<"]:",debugg(__VA_ARGS__)
#else
#define debug(...) (void(0))
#endif
inline void startupcpp(void) noexcept{
cin.tie(0);
ios::sync_with_stdio(false);
}
#include<atcoder/all>
using namespace atcoder;
using mint=modint998244353;
ll N;
mint M,L,ans;
int main(){
startupcpp();
ll i,j;
cin>>N;
vector<pair<mint,mint>> v(N);
rep(i,N){
ll a,b;
cin>>a>>b;
v[i]=pair<mint,mint>(a,b);
M+=a;
}
for(auto [t,x]:v){
mint R=L+t;
//calc x\sum_{i\in[L,R)} (M-i)(i+1)(i+2)/2
ans-=R*(R+1)*(R+2)*(R*3-M*4-3)/24*x;
ans+=L*(L+1)*(L+2)*(L*3-M*4-3)/24*x;
swap(L,R);
}
print(ans.val());
}
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