結果

問題 No.140 みんなで旅行
ユーザー LayCurse
提出日時 2015-01-29 23:58:23
言語 C++11
(gcc 13.3.0)
結果
AC  
実行時間 443 ms / 5,000 ms
コード長 2,888 bytes
コンパイル時間 1,853 ms
コンパイル使用メモリ 161,140 KB
実行使用メモリ 15,500 KB
最終ジャッジ日時 2024-06-23 04:18:39
合計ジャッジ時間 4,523 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 * 3
other AC * 19
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 #
プレゼンテーションモードにする

#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');}
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;}
char memarr[77000000]; void *mem = memarr;
#define MD 1000000007
int N;
ll dp[567][567], nx[567][567];
int C[1200][1200];
int main(){
  int i, j, k;
  ll res, tmp;
  rep(i,1200) C[0][i] = 0;
  rep(i,1200) C[i][0] = 1;
  REP(i,1,1200) REP(j,1,1200) C[i][j] = (C[i-1][j-1] + C[i-1][j]) % MD;
  reader(&N);
  dp[0][0] = 1;
  rep(k,N){
    rep(i,N+1) rep(j,N+1) nx[i][j] = 0;
    rep(i,N+1) rep(j,N+1) if(dp[i][j]){
      (nx[i][j+1] += dp[i][j]) %= MD;
      (nx[i+1][j] += dp[i][j]) %= MD;
      (nx[i][j] += dp[i][j] * i) %= MD;
    }
    rep(i,N+1) rep(j,N+1) dp[i][j] = nx[i][j];
  }
  res = 0;
  rep(i,N+1) rep(j,N+1) if(dp[i][j]){
    tmp = dp[i][j] * pw(2*i*(i-1)/2, j, MD) % MD;
    res += tmp;
  }
  res %= MD;
  writerLn(res);
  return 0;
}
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