結果

問題 No.1312 Snake Eyes
コンテスト
ユーザー tails
提出日時 2020-12-09 01:38:17
言語 C
(gcc 13.3.0)
結果
AC  
実行時間 42 ms / 2,000 ms
コード長 417 bytes
コンパイル時間 1,046 ms
コンパイル使用メモリ 29,696 KB
実行使用メモリ 5,248 KB
最終ジャッジ日時 2024-11-30 13:00:05
合計ジャッジ時間 3,352 ms
ジャッジサーバーID
（参考情報） 		judge5 / judge2
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ファイルパターン 結果
sample AC * 3
other AC * 85
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:6:1: warning: return type defaults to 'int' [-Wimplicit-int]
    6 | main(){
      | ^~~~
main.c: In function 'main':
main.c:8:9: warning: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
    8 |         scanf("%ld",&n);
      |         ^~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
  +++ |+#include <stdio.h>
    1 | #pragma GCC optimize("Ofast")
main.c:8:9: warning: incompatible implicit declaration of built-in function 'scanf' [-Wbuiltin-declaration-mismatch]
    8 |         scanf("%ld",&n);
      |         ^~~~~
main.c:8:9: note: include '<stdio.h>' or provide a declaration of 'scanf'
main.c:19:17: warning: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
   19 |                 printf("%ld",p);
      |                 ^~~~~~
main.c:19:17: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:19:17: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
main.c:19:17: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:20:17: warning: implicit declaration of function 'exit' [-Wimplicit-function-declaration]
   20 |                 exit(0);
      |                 ^~~~
main.c:1:1: note: include '<stdlib.h>' or provide a declaration of 'exit'
  +++ |+#include <stdlib.h>
    1 | #pragma GCC optimize("Ofast")
main.c:20:17: warning: incompatible implicit declaration of built-in function 'exit' [-Wbuiltin-declaration-mismatch]
   20 |                 exit(0);
      |                 ^~~~
main.c:20:17: note: include '<stdlib.h>' or provide a declaration of 'exit'
main.c:28:33: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
   28 |                                 printf("%ld",p);
      |                                 ^~~~~~
main.c:28:33: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:29:33: warning: incompatible im

ソースコード

diff # 

#pragma GCC optimize("Ofast")
#pragma GCC target("avx2")

double sqrt(double);

main(){
	long n;
	scanf("%ld",&n);
	long s=(long)sqrt(n)+2;

	for(long p=2;p<s;++p){
		long d=n%p;
		long x=n;
		while(x/=p){
			if(x%p!=d){
				goto l1;
			}
		}
		printf("%ld",p);
		exit(0);
		l1:;
	}

	for(long q=s;--q;){
		if(n%q==0){
			long p=n/q-1;
			if(q<p){
				printf("%ld",p);
				exit(0);
			}
		}
	}

	printf("%ld",n+1);
}
0