Submission #68766915

Source Code Expand

#include <bits/stdc++.h>
using namespace std;
inline int read()
{
	int x=0,f=1;char ch=getchar();
	while (ch<'0'||ch>'9'){if (ch=='-') f=-1;ch=getchar();}
	while (ch>='0'&&ch<='9'){x=x*10+ch-48;ch=getchar();}
	return x*f;
}
void write(int x)
{
    if(x<0)putchar('-'),x=-x;
    if(x<10)putchar(x+'0');
    else write(x/10),putchar(x%10+'0');
}
int n,m;
int fa[200005];
int sum[200005];
bool flag[200005];
int find(int q){
	int x=q;
	while(x!=fa[x]){
	    
		sum[fa[x]]+=sum[x];
		sum[x]=0;
		if(fa[fa[x]]!=fa[x]){
			sum[fa[fa[x]]]+=sum[fa[x]];
		    sum[fa[x]]=0;	
		}
		x=fa[x]=fa[fa[x]];
	}
	return x;
}
int main(){
	n=read();
	m=read();
	for(int i=1;i<=n;i++) fa[i]=i;
	for(int i=1;i<=m;i++){
		int op=read();
		if(op==1){
			int a=read(),b=read();
			int f1=find(a),f2=find(b);
			if(f1==f2) continue;
			//cout<<"     "<<fa[f1]<<" "<<fa[f2]<<endl;
			sum[fa[f2]]+=sum[fa[f1]];
			sum[fa[f1]]=0;
			fa[f1]=fa[f2];
		}
		if(op==2){
			int a=read();
			flag[a]^=1;
			sum[a]+=(flag[a]==1);
			sum[a]-=(flag[a]==0);
			find(a);
		}
		if(op==3){
			int a=read();
			int f1=find(a);
			if(sum[fa[f1]]>0) cout<<"Yes\n";
			else cout<<"No\n";
		}
		//for(int j=1;j<=n;j++){
		//	cout<<"   "<<sum[j]<<endl<<fa[j]<<endl;
		//}
		//cout<<endl<<endl;
	}
	return 0;
}

Submission Info

Submission Time
Task E - Reachability Query
User Fireflies
Language C++ 20 (gcc 12.2)
Score 450
Code Size 1331 Byte
Status AC
Exec Time 68 ms
Memory 5420 KiB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 450 / 450
Status
AC × 1
AC × 85
Set Name Test Cases
Sample sample_01.txt
All sample_01.txt, test_01.txt, test_02.txt, test_03.txt, test_04.txt, test_05.txt, test_06.txt, test_07.txt, test_08.txt, test_09.txt, test_10.txt, test_11.txt, test_12.txt, test_13.txt, test_14.txt, test_15.txt, test_16.txt, test_17.txt, test_18.txt, test_19.txt, test_20.txt, test_21.txt, test_22.txt, test_23.txt, test_24.txt, test_25.txt, test_26.txt, test_27.txt, test_28.txt, test_29.txt, test_30.txt, test_31.txt, test_32.txt, test_33.txt, test_34.txt, test_35.txt, test_36.txt, test_37.txt, test_38.txt, test_39.txt, test_40.txt, test_41.txt, test_42.txt, test_43.txt, test_44.txt, test_45.txt, test_46.txt, test_47.txt, test_48.txt, test_49.txt, test_50.txt, test_51.txt, test_52.txt, test_53.txt, test_54.txt, test_55.txt, test_56.txt, test_57.txt, test_58.txt, test_59.txt, test_60.txt, test_61.txt, test_62.txt, test_63.txt, test_64.txt, test_65.txt, test_66.txt, test_67.txt, test_68.txt, test_69.txt, test_70.txt, test_71.txt, test_72.txt, test_73.txt, test_74.txt, test_75.txt, test_76.txt, test_77.txt, test_78.txt, test_79.txt, test_80.txt, test_81.txt, test_82.txt, test_83.txt, test_84.txt
Case Name Status Exec Time Memory
sample_01.txt AC 1 ms 3464 KiB
test_01.txt AC 1 ms 3480 KiB
test_02.txt AC 1 ms 3584 KiB
test_03.txt AC 23 ms 3544 KiB
test_04.txt AC 22 ms 3484 KiB
test_05.txt AC 13 ms 3504 KiB
test_06.txt AC 29 ms 3512 KiB
test_07.txt AC 25 ms 3504 KiB
test_08.txt AC 27 ms 3512 KiB
test_09.txt AC 19 ms 3440 KiB
test_10.txt AC 26 ms 3492 KiB
test_11.txt AC 24 ms 3504 KiB
test_12.txt AC 22 ms 3548 KiB
test_13.txt AC 20 ms 3440 KiB
test_14.txt AC 27 ms 3448 KiB
test_15.txt AC 28 ms 3556 KiB
test_16.txt AC 21 ms 3676 KiB
test_17.txt AC 21 ms 3468 KiB
test_18.txt AC 29 ms 3504 KiB
test_19.txt AC 27 ms 3500 KiB
test_20.txt AC 21 ms 3404 KiB
test_21.txt AC 47 ms 5188 KiB
test_22.txt AC 56 ms 5328 KiB
test_23.txt AC 61 ms 5120 KiB
test_24.txt AC 61 ms 5288 KiB
test_25.txt AC 57 ms 5224 KiB
test_26.txt AC 54 ms 5236 KiB
test_27.txt AC 61 ms 5420 KiB
test_28.txt AC 52 ms 5288 KiB
test_29.txt AC 49 ms 5240 KiB
test_30.txt AC 51 ms 5240 KiB
test_31.txt AC 50 ms 5296 KiB
test_32.txt AC 50 ms 5184 KiB
test_33.txt AC 50 ms 5296 KiB
test_34.txt AC 46 ms 5208 KiB
test_35.txt AC 52 ms 5232 KiB
test_36.txt AC 45 ms 5252 KiB
test_37.txt AC 60 ms 5248 KiB
test_38.txt AC 49 ms 5228 KiB
test_39.txt AC 61 ms 5232 KiB
test_40.txt AC 46 ms 5336 KiB
test_41.txt AC 51 ms 5188 KiB
test_42.txt AC 54 ms 5232 KiB
test_43.txt AC 58 ms 5244 KiB
test_44.txt AC 58 ms 5180 KiB
test_45.txt AC 55 ms 5232 KiB
test_46.txt AC 52 ms 5416 KiB
test_47.txt AC 49 ms 5120 KiB
test_48.txt AC 53 ms 5296 KiB
test_49.txt AC 51 ms 5172 KiB
test_50.txt AC 55 ms 5208 KiB
test_51.txt AC 46 ms 5232 KiB
test_52.txt AC 56 ms 5120 KiB
test_53.txt AC 63 ms 5244 KiB
test_54.txt AC 62 ms 5172 KiB
test_55.txt AC 66 ms 5208 KiB
test_56.txt AC 68 ms 5236 KiB
test_57.txt AC 58 ms 5232 KiB
test_58.txt AC 57 ms 5332 KiB
test_59.txt AC 67 ms 5236 KiB
test_60.txt AC 65 ms 5252 KiB
test_61.txt AC 34 ms 5248 KiB
test_62.txt AC 44 ms 5332 KiB
test_63.txt AC 37 ms 5416 KiB
test_64.txt AC 38 ms 5284 KiB
test_65.txt AC 34 ms 5120 KiB
test_66.txt AC 42 ms 5240 KiB
test_67.txt AC 43 ms 5204 KiB
test_68.txt AC 43 ms 5328 KiB
test_69.txt AC 35 ms 3744 KiB
test_70.txt AC 49 ms 4576 KiB
test_71.txt AC 39 ms 3776 KiB
test_72.txt AC 56 ms 5124 KiB
test_73.txt AC 50 ms 4468 KiB
test_74.txt AC 44 ms 4780 KiB
test_75.txt AC 46 ms 4428 KiB
test_76.txt AC 29 ms 4244 KiB
test_77.txt AC 62 ms 5220 KiB
test_78.txt AC 58 ms 5208 KiB
test_79.txt AC 65 ms 5180 KiB
test_80.txt AC 64 ms 5236 KiB
test_81.txt AC 67 ms 5180 KiB
test_82.txt AC 65 ms 5236 KiB
test_83.txt AC 65 ms 5224 KiB
test_84.txt AC 63 ms 5208 KiB