#264322 (C) No.697 池の数はいくつか

• 問題: No.697 池の数はいくつか
• ユーザー: %20
• 提出日時: 2018-06-09 20:55:58
• 言語: C (gcc 12.3.0)
• 結果: AC
• 実行時間: 313 ms / 6,000 ms
• コード長: 370 bytes
• コンパイル時間: 565 ms
• コンパイル使用メモリ: 30,720 KB
• 実行使用メモリ: 36,992 KB
• 最終ジャッジ日時: 2024-11-08 07:38:29
• 合計ジャッジ時間: 4,565 ms
• ジャッジサーバーID （参考情報）: judge1 / judge4

入力	結果	実行時間; 実行使用メモリ
testcase_00	AC	1 ms; 5,248 KB
testcase_01	AC	1 ms; 5,248 KB
testcase_02	AC	1 ms; 5,248 KB
testcase_03	AC	1 ms; 5,248 KB
testcase_04	AC	1 ms; 5,248 KB
testcase_05	AC	1 ms; 5,248 KB
testcase_06	AC	1 ms; 5,248 KB
testcase_07	AC	1 ms; 5,248 KB
testcase_08	AC	1 ms; 5,248 KB
testcase_09	AC	1 ms; 5,248 KB
testcase_10	AC	1 ms; 5,248 KB
testcase_11	AC	1 ms; 5,248 KB
testcase_12	AC	1 ms; 5,248 KB
testcase_13	AC	1 ms; 5,248 KB
testcase_14	AC	1 ms; 5,248 KB
testcase_15	AC	1 ms; 5,248 KB
testcase_16	AC	1 ms; 5,248 KB
testcase_17	AC	1 ms; 5,248 KB
testcase_18	AC	1 ms; 5,248 KB
testcase_19	AC	1 ms; 5,248 KB
testcase_20	AC	1 ms; 5,248 KB
testcase_21	AC	1 ms; 5,248 KB
testcase_22	AC	1 ms; 5,248 KB
testcase_23	AC	1 ms; 5,248 KB
testcase_24	AC	36 ms; 5,760 KB
testcase_25	AC	35 ms; 5,632 KB
testcase_26	AC	35 ms; 5,632 KB
testcase_27	AC	35 ms; 5,760 KB
testcase_28	AC	35 ms; 5,632 KB
testcase_29	AC	207 ms; 36,992 KB
testcase_30	AC	313 ms; 36,992 KB
testcase_31	AC	204 ms; 36,864 KB
testcase_32	AC	312 ms; 36,992 KB
testcase_33	AC	309 ms; 36,992 KB
testcase_34	AC	311 ms; 36,992 KB

コンパイルメッセージ

main.c:5:1: warning: return type defaults to 'int' [-Wimplicit-int]
    5 | main(){
      | ^~~~
main.c: In function 'main':
main.c:7:9: warning: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
    7 |         scanf("%d%d",&H,&W);
      |         ^~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
  +++ |+#include <stdio.h>
    1 | int A[3001*3001];
main.c:7:9: warning: incompatible implicit declaration of built-in function 'scanf' [-Wbuiltin-declaration-mismatch]
    7 |         scanf("%d%d",&H,&W);
      |         ^~~~~
main.c:7:9: note: include '<stdio.h>' or provide a declaration of 'scanf'
main.c:11:25: warning: implicit declaration of function 'getchar' [-Wimplicit-function-declaration]
   11 |                         getchar();
      |                         ^~~~~~~
main.c:11:25: note: 'getchar' is defined in header '<stdio.h>'; did you forget to '#include <stdio.h>'?
main.c:22:9: warning: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
   22 |         printf("%d",z);
      |         ^~~~~~
main.c:22:9: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:22:9: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
main.c:22:9: note: include '<stdio.h>' or provide a declaration of 'printf'

ソースコード

int A[3001*3001];
int f(int i){
	return A[i]=A[i]==i?i:f(A[i]);
}
main(){
	int H,W;
	scanf("%d%d",&H,&W);
	int i=W+1;
	for(int y=0;y<H;++y){
		for(int x=0;x<W;++x){
			getchar();
			if(A[i]=getchar()=='1'?i:0){
				if(f(i-W-1))A[f(i)]=f(i-W-1);
				if(f(i-1))A[f(i)]=f(i-1);
			}
			++i;
		}
		++i;
	}
	int z=0;
	for(int i=1;i<-~W*-~H;++i)z+=i==f(i);
	printf("%d",z);
}