oj.uz

Submission #725031

# Submission time Handle Problem Language Result Execution time Memory
725031 2023-04-16T13:25:15 Z josanneo22 Inside information (BOI21_servers) C++17
0 / 100
 105 ms 196828 KB 
#include<bits/stdc++.h>
using namespace std;
#define int long long
inline int rd(){
	int x=0,w=1;
	char ch=getchar();
	for(;ch>'9'||ch<'0';ch=getchar()) if(ch=='-') w=-1;
	for(;ch>='0'&&ch<='9';ch=getchar()) x=x*10+ch-'0';
	return x*w;
}
int maxn=5000;
vector<vector<int>> st(maxn,vector<int>(maxn));
void solve(){
	int n,q; cin>>n>>q;
	for(int i=1;i<=n;i++){
		for(int j=1;j<=n;j++){
			st[i][j]=0;
		}
	}
	for(int i=1;i<=n;i++){
		st[i][i]=1;
	}
	for(int i=0;i<n+q-1;i++){
		char x; cin>>x;
		if(x=='C'){
			int v; cin>>v;
			int cnt=0;
			for(int j=1;j<=n;j++){
				if(st[j][v]==1) cnt++;
			}
			cout<<cnt<<'\n';
		}
		else if(x=='Q'){
			int u,v; cin>>u>>v;
			if(st[u][v]) cout<<"yes\n";
			else cout<<"no\n";
		}
		else{
			int u,v; cin>>u>>v;
			for(auto&p:st[u]) st[v][p]=1;
			for(auto&p:st[v]) st[u][v]=1;
		}
	}
}
signed main()
{
	ios_base::sync_with_stdio(0); cin.tie(0);
	int tt=1; //cin>>tt;
	while(tt--){
		solve();
	}
}

Compilation message

servers.cpp: In function 'void solve()':
servers.cpp:41:13: warning: unused variable 'p' [-Wunused-variable]
   41 |    for(auto&p:st[v]) st[u][v]=1;
      |             ^

Subtask #1
0 / 2.5

# Verdict Execution time Memory Grader output
1 Incorrect 99 ms 196812 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 2.5

# Verdict Execution time Memory Grader output
1 Incorrect 99 ms 196812 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 2.5

# Verdict Execution time Memory Grader output
1 Incorrect 101 ms 196828 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 2.5

# Verdict Execution time Memory Grader output
1 Incorrect 101 ms 196828 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 101 ms 196760 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 101 ms 196760 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 98 ms 196708 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 98 ms 196708 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #9
0 / 12.5

# Verdict Execution time Memory Grader output
1 Incorrect 105 ms 196788 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #10
0 / 12.5

# Verdict Execution time Memory Grader output
1 Incorrect 105 ms 196788 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #11
0 / 17.5

# Verdict Execution time Memory Grader output
1 Incorrect 100 ms 196716 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #12
0 / 17.5

# Verdict Execution time Memory Grader output
1 Incorrect 100 ms 196716 KB Output isn't correct
2 Halted 0 ms 0 KB -