結果

問題 No.493 とても長い数列と文字列(Long Long Sequence and a String)
ユーザー btk
提出日時 2017-03-11 01:40:35
言語 C++14
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 2 ms / 800 ms
コード長 3,541 bytes
コンパイル時間 1,562 ms
コンパイル使用メモリ 173,296 KB
実行使用メモリ 6,944 KB
最終ジャッジ日時 2024-06-24 09:29:16
合計ジャッジ時間 4,175 ms
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
sample AC * 4
other AC * 115
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

#include<bits/stdc++.h>
using namespace std;
typedef long long LL;
typedef __int128 INT;
#define CIN_ONLY if(1)
struct cww{cww(){
CIN_ONLY{
ios::sync_with_stdio(false);cin.tie(0);
}
}}star;
#define fin "\n"
#define FOR(i,bg,ed) for(int i=(bg);i<(ed);i++)
#define REP(i,n) FOR(i,0,n)
#define ALL(v) (v).begin(),(v).end()
#define fi first
#define se second
#define pb push_back
#define DEBUG if(0)
#define REC(ret, ...) std::function<ret (__VA_ARGS__)>
template <typename T>inline void chmin(T &l,T r){l=min(l,r);}
template <typename T>inline void chmax(T &l,T r){l=max(l,r);}
template <typename T>
istream& operator>>(istream &is,vector<T> &v){
for(auto &it:v)is>>it;
return is;
}
const int mod=1e9+7;
INT len1[100];
LL sum1[100];
LL mul1[100];
INT len2[100];
LL sum2[100];
LL mul2[100];
LL getsum(LL l){
int id=60;
LL res=0;
while(l>0){
while(l<len2[id]){
if(len1[id]<=l){
int x=(id+1)*(id+1);
vector<int> y;
while(x){
int z=x%10;
if(z==0)z=10;
y.pb(z);
x/=10;
}
reverse(ALL(y));
res=(res+sum1[id]);
REP(i,l-len1[id])res=(res+y[i]);
// cout<<id<<" "<<(LL)(l-len1[id])<<endl;
return res;
}
id--;
}
l-=len2[id];
res=(res+sum2[id]);
id--;
}
return res;
}
LL getmul(LL l){
int id=60;
LL res=1;
while(l>0){
while(l<len2[id]){
if(len1[id]<=l&&l<=len2[id]){
int x=(id+1)*(id+1);
vector<int> y;
while(x){
int z=x%10;
if(z==0)z=10;
y.pb(z);
x/=10;
}
reverse(ALL(y));
res=(res*mul1[id])%mod;
REP(i,l-len1[id])res=(res*y[i])%mod;
return res;
}
id--;
}
l-=len2[id];
res=(res*mul2[id])%mod;
id--;
}
return res;
}
// a x + b y = gcd(a, b)
// O(log (a+b) )
LL extgcd(LL a, LL b, LL &x, LL &y) {
LL g = a; x = 1; y = 0;
if (b != 0) g = extgcd(b, a % b, y, x), y -= (a / b) * x;
return g;
}
// ma
// O(log a)
LL invMod(LL a) {
LL x, y;
if (extgcd(a, mod, x, y) == 1)return (x + mod) % mod;
else return 0; // unsolvable
}
int main(){
len1[0]=0;
sum1[0]=0;
mul1[0]=1;
FOR(i,1,61){
LL x=i*i;
len1[i]=2*len1[i-1]+to_string(x).size();
mul1[i]=mul1[i-1]*mul1[i-1]%mod;
sum1[i]=sum1[i-1]*2;
while(x>0){
LL y=x%10;
if(y==0)y=10;
mul1[i]=mul1[i]*y%mod;
sum1[i]=(sum1[i]+y);
x/=10;
}
}
LL K,L,R;
cin>>K>>L>>R;
if(K>60)K=60;
if(R>len1[K]){
cout<<-1<<endl;
return 0;
}
FOR(i,0,61){
LL x=(i+1)*(i+1);
len2[i]=len1[i]+to_string(x).size();
mul2[i]=mul1[i];
sum2[i]=sum1[i];
while(x>0){
LL y=x%10;
if(y==0)y=10;
mul2[i]=mul2[i]*y%mod;
sum2[i]=(sum2[i]+y);
x/=10;
}
}
LL A=getsum(R)-getsum(L-1);
LL B=getmul(R);
if(L!=1)B*=invMod(getmul(L-1));
cout<<A<<" "<<B%mod<<endl;
//REP(i,30)cout<<getsum(i)<<endl;
return 0;
}
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