Submission #30996478

Source Code Expand

#include<bits/stdc++.h>
using namespace std;
template <class T> inline T read(){
    T r=0,f=0;char c=getchar();
    while(!isdigit(c)) f|=c=='-',c=getchar();
    while(isdigit(c)) r=r*10+(c^48),c=getchar();
    return f?-r:r;
}
const int _=2e5+5;
int n,Q;
int ff[_];
int find(int x){return ff[x]==x?x:ff[x]=find(ff[x]);}
int main(){
    n=read<int>(),Q=read<int>();
    for(int i=1;i<=n;++i) ff[i]=i;
    for(int i=1;i<=Q;++i){
        int x=find(read<int>()-1),y=find(read<int>());
        ff[x]=y;
    }
    puts(find(0)==find(n)?"Yes":"No");
    return 0;
}

Submission Info

Submission Time
Task E - Range Sums
User Quick_Kk
Language C++ (GCC 9.2.1)
Score 500
Code Size 582 Byte
Status AC
Exec Time 32 ms
Memory 4388 KiB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 500 / 500
Status
AC × 3
AC × 32
Set Name Test Cases
Sample example0.txt, example1.txt, example2.txt
All 000.txt, 001.txt, 002.txt, 003.txt, 004.txt, 005.txt, 006.txt, 007.txt, 008.txt, 009.txt, 010.txt, 011.txt, 012.txt, 013.txt, 014.txt, 015.txt, 016.txt, 017.txt, 018.txt, 019.txt, 020.txt, 021.txt, 022.txt, 023.txt, 024.txt, 025.txt, 026.txt, 027.txt, 028.txt, example0.txt, example1.txt, example2.txt
Case Name Status Exec Time Memory
000.txt AC 32 ms 4320 KiB
001.txt AC 2 ms 3532 KiB
002.txt AC 2 ms 4276 KiB
003.txt AC 2 ms 3604 KiB
004.txt AC 15 ms 3612 KiB
005.txt AC 16 ms 4152 KiB
006.txt AC 22 ms 4288 KiB
007.txt AC 22 ms 4252 KiB
008.txt AC 5 ms 4004 KiB
009.txt AC 7 ms 3540 KiB
010.txt AC 26 ms 4304 KiB
011.txt AC 28 ms 4276 KiB
012.txt AC 27 ms 4156 KiB
013.txt AC 22 ms 4272 KiB
014.txt AC 27 ms 4156 KiB
015.txt AC 29 ms 4320 KiB
016.txt AC 29 ms 4348 KiB
017.txt AC 26 ms 4388 KiB
018.txt AC 31 ms 4380 KiB
019.txt AC 26 ms 4164 KiB
020.txt AC 24 ms 4304 KiB
021.txt AC 20 ms 4196 KiB
022.txt AC 22 ms 4164 KiB
023.txt AC 24 ms 4336 KiB
024.txt AC 26 ms 4380 KiB
025.txt AC 2 ms 3908 KiB
026.txt AC 13 ms 3572 KiB
027.txt AC 12 ms 3440 KiB
028.txt AC 16 ms 3528 KiB
example0.txt AC 2 ms 3572 KiB
example1.txt AC 2 ms 3560 KiB
example2.txt AC 2 ms 3564 KiB