{"id":356,"date":"2010-08-23T14:14:00","date_gmt":"2010-08-23T06:14:00","guid":{"rendered":"http:\/\/localhost\/?p=356"},"modified":"2010-08-23T14:14:00","modified_gmt":"2010-08-23T06:14:00","slug":"fast_io_in_c__","status":"publish","type":"post","link":"https:\/\/www.shuizilong.com\/wjmzbmr\/?p=356","title":{"rendered":"\u5feb\u901fIO in C++"},"content":{"rendered":"

\u4f5c\u4e3a\u4e00\u4e2a\u4f7f\u7528C++\u7684\u7ae5\u978b\u3002\u3002\u3002\u9f9f\u901f\u7684IO\u5f80\u5f80\u4ee4\u4eba\u86cb\u75bc\u3002\u3002\u6240\u4ee5\u8981\u624b\u52a8\u52a0\u901f\u3002\u3002
(1):cin : scanf = 10 : 1
cin\u7684\u9f9f\u901f\u662f\u95fb\u540d\u7684\u3002\u3002\u3002\u53ea\u8981\u8f93\u5165\u8d85\u8fc71W\u4e2a\u6570\u6211\u5c31\u4e0d\u6562\u7528\u4e86\u3002\u3002
(2):
\u770b\u770b\u4e0b\u9762\u8fd9\u4e2a\u51fd\u6570:
inline int nextInt()
{
char c;c=getchar();
while(c!=’-‘&&(c<‘0’||c>’9’))c=getchar();
int n=0,s=1;if(c==’-‘)s=-1,c=getchar();
while(c>=’0’&&c<=’9′)n*=10,n+=c-‘0’,c=getchar();
return n*s;
}\u5f88\u663e\u7136\u8fd9\u662f\u4e00\u4e2a\u5f88SB\u7684\u8bfb\u5165\u6570\u5b57\u7684\u51fd\u6570\u3002\u3002\u3002
\u4f46\u662f\u8fd9\u4e2a\u7684\u901f\u5ea6\u662fscanf\u76844\u500d\u7011\u5e03\u6c57\u3002\u3002
(3):Pascal\u7684\u8bfb\u5165\u4e4b\u6240\u4ee5\u5feb\u901f\u662f\u56e0\u4e3a\u91cc\u9762\u6709\u8bfb\u5165\u5230\u7f13\u51b2\u533a\u3002\u3002
C++\u53ea\u597d\u624b\u52a8\u4e86\u3002\u3002
#define BUFSIZE 1000000
char buf[BUFSIZE], *pt = buf + BUFSIZE, *pend = buf + BUFSIZE;
int sign;
#define read()
do{
if (pt >= pend)
{
pt = buf;
fread(buf, 1, BUFSIZE, stdin);
}
} while(0)<\/p>\n

#define scan(t)
{
t = 0;sign=1;
read();
while ((*pt<‘0’||*pt>’9′)&&*pt!=’-‘) {pt ++; read();}
if(*pt==’-‘)sign=-1,pt++;
while (((*pt) >= ‘0’ && (*pt) <= ‘9’)) {t = t * 10 + (*(pt ++)) – ‘0’; read();}
t*=sign;
}
#define scan_str(s)
{
int p = 0;
read();
while ((*pt) == ‘ ‘ || (*pt) == ‘n’ || (*pt) == ‘r’) {pt ++; read();}
while (!((*pt) == ‘ ‘ || (*pt) == ‘n’ || (*pt) == ‘n’)) {s[p ++] = (*(pt ++)); read();}
s[p] = 0;
}fread\u5c31\u662f\u76f4\u63a5\u8bfb\u4e00\u5927\u5757\u6570\u636e\u3002\u3002\u901f\u5ea6\u81ea\u7136\u5f88\u5feb\u3002\u3002\u7136\u540e\u624b\u52a8\u6a21\u62df\u7f13\u51b2\u533a\u3002\u3002
\u901f\u5ea6\u53c8\u63d0\u9ad8\u4e00\u500d\u3002\u3002\u8ddfPascal\u5dee\u4e0d\u591a\u4e86\u3002\u3002
(5):\u8f93\u51fa\u4e5f\u6709\u60b2\u5267\u7684\u5730\u65b9\u3002\u3002
int A[20],k;
inline void print_int(int x)
{
if(x<0)putchar(‘-‘),x=-x;
k=0;while(x)A[k++]=x%10,x\/=10;
for(int i=k-1;i>=0;i–)putchar(‘0’+A[i]);
putchar(‘n’);
}\u8fd9\u4e48\u4e00\u4e2a\u51fd\u6570\u5f80\u5f80\u6bd4\u7eafprintf\u5febN\u591a\u3002\u3002\u3002
(6):\u6216\u8005\u5e72\u8106\u8f93\u51fa\u4e5f\u7528\u4e00\u4e2a\u7f13\u51b2\u533a\u3002\u3002
\u7528\u4e00\u4e2a\u5927\u6570\u7ec4s\u5b58\u50a8\u8981\u8f93\u51fa\u7684\u5b57\u7b26\u3002\u3002\u7136\u540e\u4e00\u53e3\u6c14\u8f93\u51fa\u3002\u3002\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u4f5c\u4e3a\u4e00\u4e2a\u4f7f\u7528C++\u7684\u7ae5\u978b\u3002\u3002\u3002\u9f9f\u901f\u7684IO\u5f80\u5f80\u4ee4\u4eba\u86cb\u75bc\u3002\u3002\u6240\u4ee5\u8981\u624b\u52a8\u52a0\u901f\u3002\u3002(1):cin : scanf = 10 : 1cin\u7684\u9f9f\u901f\u662f\u95fb\u540d\u7684\u3002\u3002\u3002\u53ea\u8981\u8f93\u5165\u8d85\u8fc71W\u4e2a\u6570\u6211\u5c31\u4e0d\u6562\u7528\u4e86\u3002\u3002(2):\u770b\u770b\u4e0b\u9762\u8fd9\u4e2a\u51fd\u6570:inline int nextInt(){ char c;c=getchar(); while(c!=’-‘&&(c<‘0’||c>’9’))c=getchar(); int n=0,s=1;if(c==’-‘)s=-1,c=getchar(); while(c>=’0’&&c<=’9′)n*=10,n+=c-‘0’,c=getchar(); return n*s;}\u5f88\u663e\u7136\u8fd9\u662f\u4e00\u4e2a\u5f88SB\u7684\u8bfb\u5165\u6570\u5b57\u7684\u51fd\u6570\u3002\u3002\u3002\u4f46\u662f\u8fd9\u4e2a\u7684\u901f\u5ea6\u662fscanf\u76844\u500d\u7011\u5e03\u6c57\u3002\u3002(3):Pascal\u7684\u8bfb\u5165\u4e4b\u6240\u4ee5\u5feb\u901f\u662f\u56e0\u4e3a\u91cc\u9762\u6709\u8bfb\u5165\u5230\u7f13\u51b2\u533a\u3002\u3002C++\u53ea\u597d\u624b\u52a8\u4e86\u3002\u3002#define BUFSIZE 1000000char buf[BUFSIZE], *pt = buf + BUFSIZE, *pend = buf + BUFSIZE;int sign;#define read() do{ if (pt >= pend) { pt = buf; fread(buf, 1, BUFSIZE, stdin); } } while(0) #define scan(t) { t = 0;sign=1; read(); […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[10],"tags":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=\/wp\/v2\/posts\/356"}],"collection":[{"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=356"}],"version-history":[{"count":0,"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=\/wp\/v2\/posts\/356\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=356"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=356"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=356"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}