海港
題目鏈接:
http://210.44.144.221/problem.php?cid=1002&pid=0
按照人數(shù)來入隊,如果按照船來入隊的話會超時,他還很是明確的提醒了∑ki≤3?105:所以如果按照船來儲存不行的話,那就通過人頭來儲存吧:
代碼:
#include <iostream> #include <cstring> #include <queue> #include <stdio.h> using namespace std; const int inf=3e5+7; const int theinf=1e5+7; struct node {int people;int time; }; int vis[inf];int main() {queue<node>que; //??DD?D??°?á??£ memset(vis,0,sizeof(vis));int n;long long ans=0;scanf("%d",&n);for(int i=0;i<n;i++){int k,nowtime;scanf("%d %d",&nowtime,&k);node now;if( !que.empty() )now=que.front();while(now.time+86400<=nowtime&&!que.empty()){vis[now.people]--;if( vis[now.people]==0 )ans--;que.pop();now=que.front();}node temp;for(int j=0;j<k;j++){temp.time=nowtime;int thepeo;scanf("%d",&thepeo);temp.people=thepeo;if(vis[thepeo]==0)ans++;vis[thepeo]++;que.push(temp);}printf("%lld\n",ans);}return 0; }?
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