uva-11039水到渣的题
2014-05-19 19:10
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这题感觉不用讲,只有一点需要注意的就是永两者相乘来判断异号时,注意会爆int,强制转化成double就ok了;(题外话:最近没有怎么写博客了,主要是在看大白书,如果硬是要写的话感觉是为了写博客而写博客的了,
![](http://static.blog.csdn.net/xheditor/xheditor_emot/default/tongue.gif)
,请原谅)
下面请上代码:
![](http://static.blog.csdn.net/xheditor/xheditor_emot/default/tongue.gif)
,请原谅)
下面请上代码:
#include<cstdio> #include<algorithm> using namespace std; const int maxn=5e5+5; int a[maxn]; bool cmp(int a,int b) { return abs(a)<abs(b); } int main() { //freopen("int.txt","r",stdin); int n,t; scanf("%d",&t); while(t--){ scanf("%d",&n); for(int i=0;i<n;i++)scanf("%d",&a[i]); sort(a,a+n,cmp); //for(int i=0;i<n;i++)printf("%d ",a[i]); int cnt=1,cnt1=1; for(int i=1;i<n;i++){ if(double(a[i])*a[i-1]<0)cnt++; } printf("%d\n",cnt); } return 0; }
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