{"id":358,"date":"2008-05-11T12:51:11","date_gmt":"2008-05-11T04:51:11","guid":{"rendered":"http:\/\/www.slyar.com\/blog\/?p=358"},"modified":"2022-07-03T15:46:33","modified_gmt":"2022-07-03T22:46:33","slug":"vijos-p1127","status":"publish","type":"post","link":"http:\/\/www.slyar.com\/blog\/vijos-p1127.html","title":{"rendered":"Vijos P1127 \u7ea7\u6570\u6c42\u548c C\u8bed\u8a00\u7248"},"content":{"rendered":"

\u6587\u7ae0\u4f5c\u8005\uff1a\u59dc\u5357(Slyar) <\/span>\u6587\u7ae0\u6765\u6e90\uff1aSlyar Home (www.slyar.com<\/a>) \u8f6c\u8f7d\u8bf7\u6ce8\u660e\uff0c\u8c22\u8c22\u5408\u4f5c\u3002<\/p>\n

<\/p>\n

\u63cf\u8ff0 Description<\/span><\/p>\n

\u5df2\u77e5\uff1aSn= 1\uff0b1\uff0f2\uff0b1\uff0f3\uff0b\u2026\uff0b1\uff0fn\u3002\u663e\u7136\u5bf9\u4e8e\u4efb\u610f\u4e00\u4e2a\u6574\u6570K\uff0c\u5f53n\u8db3\u591f\u5927\u7684\u65f6\u5019\uff0cSn\u5927\u4e8eK\u3002
\n\u73b0\u7ed9\u51fa\u4e00\u4e2a\u6574\u6570K\uff081<=k<=15\uff09\uff0c\u8981\u6c42\u8ba1\u7b97\u51fa\u4e00\u4e2a\u6700\u5c0f\u7684n\uff1b\u4f7f\u5f97Sn\uff1eK\u3002<\/p>\n

\u8f93\u5165\u683c\u5f0f Input Format<\/span><\/p>\n

\u8f93\u5165 k<\/p>\n

\u8f93\u51fa\u683c\u5f0f Output Format<\/span><\/p>\n

\u8f93\u51fa n<\/p>\n

Tip:\u6ce8\u610fSn\u8981\u7528double\u578b\uff0c\u5012\u6570\u8981\u75281.0\u505a\u88ab\u9664\u6570\u3002<\/span><\/p>\n

#include <stdio.h>
\n#include <math.h><\/p>\n

#define pi 3.1415926<\/p>\n

int i,n,t;
\ndouble c,r,length;
\ndouble x[101],y[101];<\/p>\n

main(){
\nscanf(\"%d%lf\",&n,&r);
\nfor (i=1;i<=n;i++) scanf(\"%lf%lf\",&x[i],&y[i]);
\nx[n+1]=x[1];
\ny[n+1]=y[1];
\nfor (t=1;t<=n;t++) length+=sqrt(pow((x[t]-x[t+1]),2)+pow((y[t]-y[t+1]),2));
\nc=2*pi*r;
\nlength+=c;
\nprintf(\"%.2lf\",length);
\nsystem(\"pause\");
\nreturn 0;
\n}<\/p>\n

\u8f6c\u8f7d\u8bf7\u6ce8\u660e\uff1aSlyar Home<\/a> » Vijos P1127 \u7ea7\u6570\u6c42\u548c C\u8bed\u8a00\u7248<\/a><\/p>","protected":false},"excerpt":{"rendered":"

\u6587\u7ae0\u4f5c\u8005\uff1a\u59dc\u5357(Slyar) \u6587\u7ae0\u6765\u6e90\uff1aSlyar Home (www.slyar.com) \u8f6c\u8f7d\u8bf7\u6ce8\u660e\uff0c\u8c22\u8c22\u5408\u4f5c\u3002 \u8f6c\u8f7d\u8bf7\u6ce8\u660e\uff1aSlyar Home » Vijos P1127 \u7ea7\u6570\u6c42\u548c C\u8bed\u8a00\u7248<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1103],"tags":[517],"class_list":["post-358","post","type-post","status-publish","format-standard","hentry","category-acm-oj-solution","tag-vijos"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t