結果

問題 No.147 試験監督（2）
ユーザー LayCurseLayCurse
提出日時 2015-02-09 22:06:46
言語 C++11
(gcc 11.4.0)
結果
AC  
実行時間 69 ms / 2,000 ms
コード長 5,851 bytes
コンパイル時間 2,263 ms
コンパイル使用メモリ 162,084 KB
実行使用メモリ 6,940 KB
最終ジャッジ日時 2024-06-23 16:40:32
合計ジャッジ時間 2,702 ms
ジャッジサーバーID
（参考情報） 		judge4 / judge5
このコードへのチャレンジ
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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 67 ms
6,816 KB
testcase_01 AC 68 ms
6,940 KB
testcase_02 AC 69 ms
6,940 KB
testcase_03 AC 2 ms
6,940 KB
権限があれば一括ダウンロードができます
コンパイルメッセージ
main.cpp: In function ‘void reader(double*)’:
main.cpp:15:29: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   15 | void reader(double *x){scanf("%lf",x);}
      |                        ~~~~~^~~~~~~~~

ソースコード

diff # 

#include<bits/stdc++.h>
using namespace std;

#define REP(i,a,b) for(i=a;i<b;i++)
#define rep(i,n) REP(i,0,n)

#define mygc(c) (c)=getchar_unlocked()
#define mypc(c) putchar_unlocked(c)

#define ll long long
#define ull unsigned ll

void reader(int *x){int k,m=0;*x=0;for(;;){mygc(k);if(k=='-'){m=1;break;}if('0'<=k&&k<='9'){*x=k-'0';break;}}for(;;){mygc(k);if(k<'0'||k>'9')break;*x=(*x)*10+k-'0';}if(m)(*x)=-(*x);}
void reader(ll *x){int k,m=0;*x=0;for(;;){mygc(k);if(k=='-'){m=1;break;}if('0'<=k&&k<='9'){*x=k-'0';break;}}for(;;){mygc(k);if(k<'0'||k>'9')break;*x=(*x)*10+k-'0';}if(m)(*x)=-(*x);}
void reader(double *x){scanf("%lf",x);}
int reader(char c[]){int i,s=0;for(;;){mygc(i);if(i!=' '&&i!='\n'&&i!='\r'&&i!='\t'&&i!=EOF) break;}c[s++]=i;for(;;){mygc(i);if(i==' '||i=='\n'||i=='\r'||i=='\t'||i==EOF) break;c[s++]=i;}c[s]='\0';return s;}
template <class T, class S> void reader(T *x, S *y){reader(x);reader(y);}
template <class T, class S, class U> void reader(T *x, S *y, U *z){reader(x);reader(y);reader(z);}
template <class T, class S, class U, class V> void reader(T *x, S *y, U *z, V *w){reader(x);reader(y);reader(z);reader(w);}

void writer(int x, char c){int s=0,m=0;char f[10];if(x<0)m=1,x=-x;while(x)f[s++]=x%10,x/=10;if(!s)f[s++]=0;if(m)mypc('-');while(s--)mypc(f[s]+'0');mypc(c);}
void writer(ll x, char c){int s=0,m=0;char f[20];if(x<0)m=1,x=-x;while(x)f[s++]=x%10,x/=10;if(!s)f[s++]=0;if(m)mypc('-');while(s--)mypc(f[s]+'0');mypc(c);}
void writer(double x, char c){printf("%.15f",x);mypc(c);}
void writer(const char c[]){int i;for(i=0;c[i]!='\0';i++)mypc(c[i]);}
void writer(const char x[], char c){int i;for(i=0;x[i]!='\0';i++)mypc(x[i]);mypc(c);}
template<class T> void writerLn(T x){writer(x,'\n');}
template<class T, class S> void writerLn(T x, S y){writer(x,' ');writer(y,'\n');}
template<class T, class S, class U> void writerLn(T x, S y, U z){writer(x,' ');writer(y,' ');writer(z,'\n');}
template<class T> void writerArr(T x[], int n){int i;if(!n){mypc('\n');return;}rep(i,n-1)writer(x[i],' ');writer(x[n-1],'\n');}

char memarr[17000000]; void *mem = memarr;
#define MD 1000000007

struct llModMatrix{
  int r, c, mod; ll limit; ll **data;
  void malloc(int r, int c, int mod){int i;this->r=r;this->c=c;this->mod=mod;limit=((1ULL<<63)-1)-(ull)(mod-1)*(mod-1);data=(ll**)std::malloc(sizeof(ll*)*r);data[0]=(ll*)std::malloc(sizeof(ll)*r*c);REP(i,1,r)data[i]=data[i-1]+c;}
  void* malloc(int r, int c, int mod, void *workMemory){int i;this->r=r;this->c=c;this->mod=mod;limit=((1ULL<<63)-1)-(ull)(mod-1)*(mod-1);data=(ll**)workMemory;data[0]=(ll*)(data+r);REP(i,1,r)data[i]=data[i-1]+c;return (void*)(data[0]+r*c);}
  void free(void){std::free(data[0]);std::free(data);}
  void setIdentity(){int i,j;rep(i,r)rep(j,c){data[i][j]=0;if(i==j)data[i][j]=1;}}
  void setZero(){int i,j;rep(i,r)rep(j,c)data[i][j]=0;}
  void operator=(llModMatrix &a){int i,j;r=a.r;c=a.c;rep(i,r)rep(j,c)data[i][j]=a.data[i][j];}
  void operator+=(llModMatrix &a){int i,j;rep(i,r)rep(j,c){data[i][j]+=a.data[i][j];if(data[i][j]>=mod)data[i][j]-=mod;if(data[i][j]<=-mod)data[i][j]+=mod;}}
  void operator-=(llModMatrix &a){int i,j;rep(i,r)rep(j,c){data[i][j]-=a.data[i][j];if(data[i][j]>=mod)data[i][j]-=mod;if(data[i][j]<=-mod)data[i][j]+=mod;}}
  void mixed(void){int i,j;rep(i,r)rep(j,c){if(data[i][j]<0)data[i][j]+=mod;if(data[i][j]&&rand()%2)data[i][j]-=mod;}}
  void add(llModMatrix &a, llModMatrix &b){int i,j;r=a.r;c=a.c;rep(i,r)rep(j,c){data[i][j]=a.data[i][j]+b.data[i][j];if(data[i][j]>=mod)data[i][j]-=mod;if(data[i][j]<=-mod)data[i][j]+=mod;}}
  void sub(llModMatrix &a, llModMatrix &b){int i,j;r=a.r;c=a.c;rep(i,r)rep(j,c){data[i][j]=a.data[i][j]-b.data[i][j];if(data[i][j]>=mod)data[i][j]-=mod;if(data[i][j]<=-mod)data[i][j]+=mod;}}
  void mul(llModMatrix &a, llModMatrix &b){int i,j,k;r=a.r;c=b.c;setZero();rep(i,r)rep(k,a.c)if(a.data[i][k])rep(j,c){data[i][j]+=a.data[i][k]*b.data[k][j];if(data[i][j]>=limit||data[i][j]<=-limit)data[i][j]%=mod;}rep(i,r)rep(j,c)if(data[i][j]>=mod||data[i][j]<=-mod)data[i][j]%=mod;}
  void pow(llModMatrix &a, ull b, void *workMemory){llModMatrix t1,t2;r=c=a.r;workMemory=t1.malloc(r,c,mod,workMemory);workMemory=t2.malloc(r,c,mod,workMemory);setIdentity();t1=a;while(b){if(b%2){t2=*this;this->mul(t2,t1);}t2.mul(t1,t1);t1=t2;b/=2;}}
};


struct llModMatrixFastPowVec{
  llModMatrix A[64];
  int n, mod;
  ll limit;
  ll *s, *t;
  void* set(llModMatrix &m, void *mem, int mx = 64){
    int i;
    n = m.r; mod = m.mod; limit = m.limit;
    rep(i,mx) mem = A[i].malloc(n,n,m.mod,mem);
    A[0] = m;
    REP(i,1,mx) A[i].mul(A[i-1],A[i-1]);
    s = (ll*)mem;
    t = s + n;
    return (void*)(t + n);
  }
  ll get(ull a, ll x[], ll res[]=NULL){
    int i, j, k, p = 0;
    ll r = 0;

    rep(i,n) s[i] = x[i];
    for(;a;p++,a/=2) if(a%2){
      rep(i,n) t[i] = 0;
      rep(i,n) rep(j,n){
        t[i] += A[p].data[i][j] * s[j];
        if(t[i]<-limit||t[i]>limit) t[i] %= mod;
      }
      rep(i,n) s[i] = t[i] % mod;
    }
    if(res != NULL) rep(i,n) res[i] = s[i];
    rep(i,n) r += s[i];
    r %= mod;
    if(r<0) r += mod;
    return r;
  }
};


ull pw(ull a, ull b, ull m){ull r=1;while(b){if(b&1)r=r*a%m;b>>=1;a=a*a%m;}return r;}

int N;
ll C[100000], D[100000];
char buf[10000];

int main(){
  int i, j, k;
  ll res = 1, tmp;

  llModMatrix mt;
  ll x[2] = {1,0};
  llModMatrixFastPowVec sol;

  mem = mt.malloc(2,2,MD,mem);
  mt.data[0][0]=0;
  mt.data[0][1]=1;
  mt.data[1][0]=1;
  mt.data[1][1]=1;
  mem = sol.set(mt,mem);

  reader(&N);
  rep(i,N){
    reader(C+i);
    k = reader(buf);
    D[i] = 0;
    rep(j,k){
      D[i] = D[i] * 10 + buf[j]-'0';
      if(D[i] > 100000000000000000LL) D[i] %= MD-1;
    }
    D[i] %= MD-1;
  }

  rep(i,N){
    tmp = sol.get(C[i]+1, x);
    if(tmp==0){ res=0; continue; }
    res = (res * pw(tmp, D[i], MD)) % MD;
  }
  writerLn(res);

  return 0;
}
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