結果

問題 No.243 出席番号(2)
ユーザー 👑 testestest
提出日時 2017-11-09 01:47:35
言語 C
(gcc 13.3.0)
結果
AC  
実行時間 130 ms / 2,000 ms
コード長 269 bytes
コンパイル時間 1,077 ms
コンパイル使用メモリ 29,184 KB
実行使用メモリ 5,248 KB
最終ジャッジ日時 2024-11-24 06:06:46
合計ジャッジ時間 2,755 ms
ジャッジサーバーID
（参考情報） 		judge5 / judge2
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 * 30
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.c:1:1: warning: data definition has no type or storage class
    1 | P=1e9+7;
      | ^
main.c:1:1: warning: type defaults to 'int' in declaration of 'P' [-Wimplicit-int]
main.c:2:1: warning: data definition has no type or storage class
    2 | a[6000],n,t,ans,i,k;
      | ^
main.c:2:1: warning: type defaults to 'int' in declaration of 'a' [-Wimplicit-int]
main.c:2:9: warning: type defaults to 'int' in declaration of 'n' [-Wimplicit-int]
    2 | a[6000],n,t,ans,i,k;
      |         ^
main.c:2:11: warning: type defaults to 'int' in declaration of 't' [-Wimplicit-int]
    2 | a[6000],n,t,ans,i,k;
      |           ^
main.c:2:13: warning: type defaults to 'int' in declaration of 'ans' [-Wimplicit-int]
    2 | a[6000],n,t,ans,i,k;
      |             ^~~
main.c:2:17: warning: type defaults to 'int' in declaration of 'i' [-Wimplicit-int]
    2 | a[6000],n,t,ans,i,k;
      |                 ^
main.c:2:19: warning: type defaults to 'int' in declaration of 'k' [-Wimplicit-int]
    2 | a[6000],n,t,ans,i,k;
      |                   ^
main.c:4:1: warning: return type defaults to 'int' [-Wimplicit-int]
    4 | main(){
      | ^~~~
main.c: In function 'main':
main.c:5:9: warning: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
    5 |         scanf("%d",&n);
      |         ^~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
  +++ |+#include <stdio.h>
    1 | P=1e9+7;
main.c:5:9: warning: incompatible implicit declaration of built-in function 'scanf' [-Wbuiltin-declaration-mismatch]
    5 |         scanf("%d",&n);
      |         ^~~~~
main.c:5:9: note: include '<stdio.h>' or provide a declaration of 'scanf'
main.c:10:9: warning: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
   10 |         printf("%d",(ans+P)%P);
      |         ^~~~~~
main.c:10:9: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:10:9: warning: incompatible implicit declaration of built-in function 'p

ソースコード

diff #
プレゼンテーションモードにする

P=1e9+7;
a[6000],n,t,ans,i,k;
long dp[6000],f;
main(){
    scanf("%d",&n);
    for(;~scanf("%d",&t);)a[t]++;
    f=dp[0]=1;
    for(k=0;k<n;k++)for(i=k;i>=0;i--)dp[i+1]=(dp[i+1]+dp[i]*a[k])%P;
    for(i=0;i<=n;f=(f*++i)%P)ans=(ans+(n-i&1?-1:1)*f*dp[n-i])%P;
    printf("%d",(ans+P)%P);
}
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