06 2018 档案

摘要：CodeForces - 651C Watchmen are in a danger and Doctor Manhattan together with his friend Daniel Dreiberg should warn them as soon as possible. There a 阅读全文

摘要：#include<iostream>using namespace std;int main(){ int n,i; long long sum,x; cin>>n; sum=0; for(i=1;i<=n;i++){ cin>>x; sum=sum+x-1; if(sum%2){ cout<<"1 阅读全文