\u5c31\u662f\u8bf4\u4e00\u4e2a\u4e09\u89d2\u5f62\u3002\u30022\u6761\u8fb9\u957f\u7684\u5e73\u65b9\u5206\u522b\u4e3aA\u548cB\u3002\u3002\u90fd\u5c0f\u4e8e2*10^9 \u5e76\u4e14\u8fd9\u4e2a\u4e09\u89d2\u5f62\u4e09\u4e2a\u9876\u70b9\u7684\u5750\u6807\u90fd\u662f\u6574\u6570\u3002\u3002\u6c42\u6700\u5927\u53ef\u80fd\u7684\u9762\u79ef\u6216\u8005\u6ca1\u6709\u8fd9\u6837\u7684\u4e09\u89d2\u5f62\u8fd4\u56de-1.\u3002
\u9996\u5148\u53d8\u957f\u77e5\u9053\u4e86\u3002\u3002\u90a3\u4e48\u8fd9\u4e2a\u4e09\u89d2\u5f62\u7684\u5939\u89d2\u8d8a\u63a5\u8fd190\u8d8a\u597d\u3002\u3002\u90a3\u4e48\u53ea\u8981\u7b97\u51fa\u6240\u6709\u53ef\u80fd\u7684\u89d2\u5ea6\u7136\u540e\u626b\u63cf\u8fc7\u53bb\u5c31\u53ef\u4ee5\u4e86\u3002\u3002\u3002
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#include <vector>
#include <list>
#include <map>
#include <set>
#include <deque>
#include <queue>
#include <stack> a
#include <bitset>
#include <algorithm>
#include <functional>
#include <numeric>
#include <utility>
#include <complex>
#include <sstream>
#include <iostream>
#include <iomanip>
#include <cstdio>
#include <cmath>
#include <cstdlib>
#include <cstring>
#include <ctime>
#include <cassert>
#include <cctype>
using namespace std;
typedef long long ll;
const int maxn=2000000000;
vector<ll> S;
void predo()
{
for(ll i=0;i*i<maxn;i++)
S.push_back(i*i);
}
int inS(int x)
{
int i=lower_bound(S.begin(),S.end(),x)-S.begin();
if(S[i]==x) return i;
return -1;
}
class MaxTriangle
{
vector<double> put(int A)
{
vector<double>res;
double p=acos(0);
for(int i=0;i<S.size()&&S[i]<=A;i++)
{
int B=A-S[i];
int t=inS(B);if(t==-1) continue;
double a=atan2(i,t);
res.push_back(a);
res.push_back(a+p);
}
return res;
}
public:
double calculateArea(int A, int B)
{
predo();double p=acos(0);
vector<double> a=put(A),b=put(B);
sort(a.begin(),a.end());sort(b.begin(),b.end());
if(a.size()==0||b.size()==0) return -1;
double best=0;
for(int j=0,i=0;i<a.size()&&a[i]<=p;i++)
{
while(b[j]-a[i]<p&&j!=b.size()-1)j++;
double q=b[j]-a[i];
if(abs(q-p)<abs(best-p)) best=q;
if(j)j–;
if(abs(q-p)<abs(best-p)) best=q;
}
return sin(best)*sqrt(A)*sqrt(B)\/2;
}
}; <\/p>\n","protected":false},"excerpt":{"rendered":"
\u5c31\u662f\u8bf4\u4e00\u4e2a\u4e09\u89d2\u5f62\u3002\u30022\u6761\u8fb9\u957f\u7684\u5e73\u65b9\u5206\u522b\u4e3aA\u548cB\u3002\u3002\u90fd\u5c0f\u4e8e2*10^9 \u5e76\u4e14\u8fd9\u4e2a\u4e09\u89d2\u5f62\u4e09\u4e2a\u9876\u70b9\u7684\u5750\u6807\u90fd\u662f\u6574\u6570\u3002\u3002\u6c42\u6700\u5927\u53ef\u80fd\u7684\u9762\u79ef\u6216\u8005\u6ca1\u6709\u8fd9\u6837\u7684\u4e09\u89d2\u5f62\u8fd4\u56de-1.\u3002\u9996\u5148\u53d8\u957f\u77e5\u9053\u4e86\u3002\u3002\u90a3\u4e48\u8fd9\u4e2a\u4e09\u89d2\u5f62\u7684\u5939\u89d2\u8d8a\u63a5\u8fd190\u8d8a\u597d\u3002\u3002\u90a3\u4e48\u53ea\u8981\u7b97\u51fa\u6240\u6709\u53ef\u80fd\u7684\u89d2\u5ea6\u7136\u540e\u626b\u63cf\u8fc7\u53bb\u5c31\u53ef\u4ee5\u4e86\u3002\u3002\u3002\u597d\u70e6\u554a\u3002\u3002\u7a0b\u5e8f\u5f88\u957f\u5f88\u7325\u7410\u3002\u3002#include <vector> #include <list> #include <map> #include <set> #include <deque> #include <queue> #include <stack> a#include <bitset> #include <algorithm> #include <functional> #include <numeric> #include <utility> #include <complex> #include <sstream> #include <iostream> #include <iomanip> #include <cstdio> #include <cmath> #include <cstdlib> #include <cstring> #include <ctime> #include <cassert>#include <cctype>using namespace std;typedef long long ll;const int maxn=2000000000;vector<ll> S;void predo(){ […]<\/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\/93"}],"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=93"}],"version-history":[{"count":0,"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=\/wp\/v2\/posts\/93\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=93"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=93"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=93"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}