delete pics to save space

history_source/信息学奥赛一本通/1.5.3.7.cpp

@@ -0,0 +1,31 @@
+#include<cstdio>
+using namespace std;
+int hash_(char n)
+{
+	switch(n)
+	{
+		case 'A':return 0;
+		case 'T':return 1;
+		case 'G':return 2;
+		case 'C':return 3;
+	} 
+}
+char _hash(int n)
+{
+	switch(n)
+	{
+		case 0:return 'A';
+		case 1:return 'T';
+		case 2:return 'G';
+		case 3:return 'C';
+	}
+}
+int main()
+{
+	int pei[4]={1,0,3,2};
+	char a;
+	while(a=getchar(),a!='\n')
+		printf("%c",_hash(pei[hash_(a)]));
+	printf("\n");
+	return 0;
+}