結果

問題 No.2119 一般化百五減算
ユーザー TKTYITKTYI
提出日時 2022-11-05 00:20:25
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 64 ms / 2,000 ms
コード長 2,454 bytes
コンパイル時間 4,484 ms
コンパイル使用メモリ 260,696 KB
最終ジャッジ日時 2025-02-08 18:27:06
ジャッジサーバーID
(参考情報)
judge5 / judge4
このコードへのチャレンジ
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ファイルパターン 結果
other AC * 25
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ソースコード

diff #
プレゼンテーションモードにする

#include<bits/stdc++.h>
#include<atcoder/all>
using namespace std;
using namespace atcoder;
typedef long long int ll;
typedef long double ld;
#define FOR(i,l,r) for(ll i=l;i<r;i++)
#define REP(i,n) FOR(i,0,n)
#define RFOR(i,l,r) for(ll i=r-1;i>=l;i--)
#define RREP(i,n) RFOR(i,0,n)
#define ALL(x) x.begin(),x.end()
#define PA pair<ll,ll>
#define F first
#define S second
#define BS(A,x) binary_search(ALL(A),x)
#define LB(A,x) (ll)(lower_bound(ALL(A),x)-A.begin())
#define UB(A,x) (ll)(upper_bound(ALL(A),x)-A.begin())
#define COU(A,x) (UB(A,x)-LB(A,x))
#define sz(c) ((ll)(c).size())
/*
#include<boost/multiprecision/cpp_int.hpp>
namespace mp=boost::multiprecision;
using Bint=mp::cpp_int;
*/
template<typename T>using min_priority_queue=priority_queue<T,vector<T>,greater<T>>;
template<typename T1,typename T2>ostream&operator<<(ostream&os,pair<T1,T2>&p){os<<p.F<<" "<<p.S;return os;}
template<typename T1,typename T2>istream&operator>>(istream&is,pair<T1,T2>&p){is>>p.F>>p.S;return is;}
template<typename T>ostream&operator<<(ostream&os,vector<T>&v){REP(i,sz(v))os<<v[i]<<(i+1!=sz(v)?" ":"");return os;}
template<typename T>istream&operator>>(istream&is,vector<T>&v){for(T&in:v)is>>in;return is;}
template<class T>bool chmax(T&a,T b){if(a<b){a=b;return 1;}return 0;}
template<class T>bool chmin(T&a,T b){if(b<a){a=b;return 1;}return 0;}
ld dist(ld x1,ld y1,ld x2,ld y2){return sqrtl((x1-x2)*(x1-x2)+(y1-y2)*(y1-y2));}
void YN(bool x){cout<<(x?"Yes":"No")<<endl;}
//using mint=modint1000000007;
using mint=modint998244353;
//const ll mod=1000000007;
const ll mod=998244353;
//using mint=modint;
ostream&operator<<(ostream&os,mint&a){os<<a.val();return os;}
vector<ll>fast_mod_convolution(vector<ll>&a,vector<ll>&b,ll mod){
const ll m1=167772161,m2=469762049,m3=1224736769;
const ll m1_inv_m2=inv_mod(m1,m2);
const ll m12_inv_m3=inv_mod(m1*m2,m3);
const ll m12_mod=m1*m2%mod;
auto x=convolution<m1>(a,b);
auto y=convolution<m2>(a,b);
auto z=convolution<m3>(a,b);
vector<ll>ret(sz(a)+1);
REP(i,sz(a)+1){
ll v1=(y[i]-x[i])*m1_inv_m2%m2;if(v1<0)v1+=m2;
ll v2=(z[i]-(x[i]+m1*v1)%m3)*m12_inv_m3%m3;if(v2<0)v2+=m3;
ret[i]=(x[i]+m1*v1+m12_mod*v2)%mod;
}
return ret;
}
int main(){
ll N,M;cin>>N>>M;
ll B,C;cin>>B>>C;
C%=B;C+=B;C%=B;
REP(i,M-1){
ll _B,_C;cin>>_B>>_C;
while(C<=N&&(C-_C)%_B)C+=B;
if(C>N)break;
if(B<=N)B*=_B/__gcd(B,_B);
}
if(C<=N)cout<<C<<endl;
else cout<<"NaN"<<endl;
return 0;
}
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