結果
| 問題 | 
                            No.330 Eigenvalue Decomposition
                             | 
                    
| コンテスト | |
| ユーザー | 
                             rickytheta
                         | 
                    
| 提出日時 | 2015-12-23 12:58:58 | 
| 言語 | C90  (gcc 12.3.0)  | 
                    
| 結果 | 
                             
                                AC
                                 
                             
                            
                         | 
                    
| 実行時間 | 59 ms / 5,000 ms | 
| コード長 | 268 bytes | 
| コンパイル時間 | 106 ms | 
| コンパイル使用メモリ | 21,504 KB | 
| 実行使用メモリ | 5,248 KB | 
| 最終ジャッジ日時 | 2024-12-23 14:41:20 | 
| 合計ジャッジ時間 | 2,776 ms | 
| 
                            ジャッジサーバーID (参考情報)  | 
                        judge4 / judge5 | 
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| ファイルパターン | 結果 | 
|---|---|
| sample | AC * 5 | 
| other | AC * 31 | 
コンパイルメッセージ
main.c:2:1: warning: data definition has no type or storage class
    2 | d[100010],i;
      | ^
main.c:2:1: warning: type defaults to ‘int’ in declaration of ‘d’ [-Wimplicit-int]
main.c:2:11: warning: type defaults to ‘int’ in declaration of ‘i’ [-Wimplicit-int]
    2 | d[100010],i;
      |           ^
main.c:3:1: warning: return type defaults to ‘int’ [-Wimplicit-int]
    3 | r(x){
      | ^
main.c: In function ‘r’:
main.c:3:1: warning: type of ‘x’ defaults to ‘int’ [-Wimplicit-int]
main.c: At top level:
main.c:6:1: warning: return type defaults to ‘int’ [-Wimplicit-int]
    6 | main(n,m,a,b,c){
      | ^~~~
main.c: In function ‘main’:
main.c:6:1: warning: type of ‘n’ defaults to ‘int’ [-Wimplicit-int]
main.c:6:1: warning: type of ‘m’ defaults to ‘int’ [-Wimplicit-int]
main.c:6:1: warning: type of ‘a’ defaults to ‘int’ [-Wimplicit-int]
main.c:6:1: warning: type of ‘b’ defaults to ‘int’ [-Wimplicit-int]
main.c:6:1: warning: type of ‘c’ defaults to ‘int’ [-Wimplicit-int]
main.c:7:3: warning: ignoring return value of ‘scanf’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
    7 |   scanf("%d%d",&n,&m);
      |   ^~~~~~~~~~~~~~~~~~~
main.c:10:5: warning: ignoring return value of ‘scanf’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   10 |     scanf("%d%d%d",&a,&b,&c);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~
            
            ソースコード
#include <stdio.h>
d[100010],i;
r(x){
  return d[x]<0?x:(d[x]=r(d[x]));
}
main(n,m,a,b,c){
  scanf("%d%d",&n,&m);
  for(i=n;i--;)d[i]=-1;
  for(;m--;){
    scanf("%d%d%d",&a,&b,&c);
    a=r(a-1);b=r(b-1);
    if(a-b)d[a]+=d[b],d[b]=a,--n;
  }
  i=!printf("%d\n",n);
}
            
            
            
        
            
rickytheta