Submission #1263496
Source Code Expand
#include <bits/stdc++.h>
#define int long long
#define double long double
using namespace std;
template<class T> string tostr(T x) { stringstream o; o << x; return o.str(); }
template<class T> T sqr(T x) { return x*x; }
template<class T> T mypow(T x, int n) { T r = 1; while (n > 0) { if (n & 1)r = r*x; x = x*x; n >>= 1; }return r; }
int toint(string s) { int v; stringstream i(s); i >> v; return v; }
bool check(int x, int y, int w, int h) { return x >= 0 && y >= 0 && w > x && h > y; }
int gcd(int a, int b) { return b ? gcd(b, a%b) : a; }
int lcm(int a, int b) { return a / gcd(a, b) * b; }
#define REP(i,a,b) for(int (i) = (a);i < (b);(i)++)
#define rep(i,n) REP(i,0,n)
#define PER(i,a,b) for(int (i) = (a-1);i >= (b);(i)--)
#define per(i,n) PER(i,n,0)
#define each(i,n) for(auto &i : n)
#define clr(a) memset((a), 0 ,sizeof(a))
#define mclr(a) memset((a), -1 ,sizeof(a))
#define all(a) (a).begin(),(a).end()
#define dump(val) cerr << #val " = " << val << endl;
#define dum(val) cerr << #val " = " << val;
#define FILL(a,v) fill(a,a+sizeof(a)/sizeof(*a),v)
const int dx[8] = { +1,+0,-1,+0,+1,+1,-1,-1 };
const int dy[8] = { +0,-1,+0,+1,-1,+1,-1,+1 };
const int mod = 1e9 + 7;
const int INF = 1e9;
signed main() {
int n, m;
cin >> n >> m;
map<int, int> mp;
rep(i, m){
int a, b;
cin >> a >> b;
mp[a]++;
mp[b]++;
}
each(i, mp){
if(i.second % 2){
cout << "NO" << endl;return 0;
}
}
cout << "YES" << endl;return 0;
return 0;
}
Submission Info
Submission Time |
|
Task |
B - Unplanned Queries |
User |
omu |
Language |
C++14 (GCC 5.4.1) |
Score |
500 |
Code Size |
1525 Byte |
Status |
AC |
Exec Time |
119 ms |
Memory |
5632 KB |
Judge Result
Set Name |
Sample |
All |
Score / Max Score |
0 / 0 |
500 / 500 |
Status |
|
|
Set Name |
Test Cases |
Sample |
sample1.txt, sample2.txt |
All |
sample1.txt, sample2.txt, in1.txt, in10.txt, in11.txt, in12.txt, in13.txt, in14.txt, in15.txt, in16.txt, in2.txt, in3.txt, in4.txt, in5.txt, in6.txt, in7.txt, in8.txt, in9.txt, sample1.txt, sample2.txt |
Case Name |
Status |
Exec Time |
Memory |
in1.txt |
AC |
113 ms |
5632 KB |
in10.txt |
AC |
94 ms |
4224 KB |
in11.txt |
AC |
70 ms |
896 KB |
in12.txt |
AC |
94 ms |
4224 KB |
in13.txt |
AC |
94 ms |
4224 KB |
in14.txt |
AC |
114 ms |
5632 KB |
in15.txt |
AC |
1 ms |
256 KB |
in16.txt |
AC |
1 ms |
256 KB |
in2.txt |
AC |
118 ms |
5632 KB |
in3.txt |
AC |
112 ms |
5632 KB |
in4.txt |
AC |
119 ms |
5632 KB |
in5.txt |
AC |
115 ms |
5632 KB |
in6.txt |
AC |
94 ms |
4224 KB |
in7.txt |
AC |
97 ms |
4224 KB |
in8.txt |
AC |
94 ms |
4224 KB |
in9.txt |
AC |
99 ms |
4224 KB |
sample1.txt |
AC |
1 ms |
256 KB |
sample2.txt |
AC |
1 ms |
256 KB |