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ACIn Reply To:边看电影边写代码,竟然一次 0 MS AC,黄河之水天上来~ Posted by:gfedcba at 2009-01-12 22:40:27 #include <iostream>
#include <vector>
using namespace std;
void input();
void solve();
vector<int> list;
vector<int> listD;
int tmp;
int main()
{
while (cin>>tmp) {
if (tmp==-1) break;
list.push_back(tmp);
input();
solve();
list.clear();
listD.clear();
}
return 0;
}
void input() {
while (cin>>tmp) {
if (tmp==0) return;
else list.push_back(tmp);
}
}
void solve() {
int res=0;
for (int i=0;i<list.size();i++) {
listD.push_back(list[i]*2);
}
for (int i=0;i<list.size();i++) {
for (int j=0;j<listD.size();j++) {
if (list[i]==listD[j]) res++;
}
}
cout<<res<<endl;
}
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