Submission #1096325

#	Time	Username	Problem	Language	Result	Execution time	Memory
1096325		vjudge1	Inside information (BOI21_servers)	C++14	5 / 100	642 ms	524288 KiB

servers

#include<iostream>
#include<cstdio>
#include<cstring>
#include<vector>
#define reg register
using namespace std;
const int N=300000;
int n,m,s,l,k,cnt[N];
vector<int>num[N];
vector<int>a;
int main()
{
	scanf("%d%d",&n,&k);
	k+=n-1;
	for(reg int i=1;i<=n;i++)
	{
		num[i].push_back(i);
		cnt[i]=1;
	}
	for(;k;k--)
	{
		char op=getchar();
		while(op!='S'&&op!='Q'&&op!='C')
			op=getchar();
		if(op=='S')
		{
			int x,y;
			scanf("%d%d",&x,&y);
			a=num[y];
			for(auto z:num[x])
			{
				num[y].push_back(z);
				++cnt[z]; 
			}
			for(auto z:a)
			{
				num[x].push_back(z);
				++cnt[z];
			}
		}
		if(op=='Q')
		{
			int x,y;
			scanf("%d%d",&x,&y);
			bool flag=0;
			for(auto z:num[x])
				if(z==y)
				{
					flag=1;
					break; 
				}
			if(flag)
				puts("yes");
			else
				puts("no");
		}
		if(op=='C')
		{
			int x;
			scanf("%d",&x);
			printf("%d\n",cnt[x]); 
		}
	}
}

Compilation message (stderr)

servers.cpp: In function 'int main()':
servers.cpp:13:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |  scanf("%d%d",&n,&k);
      |  ~~~~~^~~~~~~~~~~~~~
servers.cpp:28:9: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   28 |    scanf("%d%d",&x,&y);
      |    ~~~~~^~~~~~~~~~~~~~
servers.cpp:44:9: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   44 |    scanf("%d%d",&x,&y);
      |    ~~~~~^~~~~~~~~~~~~~
servers.cpp:60:9: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   60 |    scanf("%d",&x);
      |    ~~~~~^~~~~~~~~

• Subtask 1: 2.5 / 2.5
• Subtask 2: 2.5 / 2.5
• Subtask 3: 0 / 2.5
• Subtask 4: 0 / 2.5
• Subtask 5: 0 / 5
• Subtask 6: 0 / 5
• Subtask 7: 0 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 12.5
• Subtask 10: 0 / 12.5
• Subtask 11: 0 / 17.5
• Subtask 12: 0 / 17.5