#include<bits/stdc++.h>
#include<unordered_map>
#include<unordered_set>
#define rep(i,a,b) for(int i=int(a);i<int(b);i++)
#define rrep(i,a,b) for(int i=int(a);i>int(b);i--)
#define trav(a,v) for(auto& a: v)
#define sz(v) v.size()
#define all(v) v.begin(),v.end()
#define vi vector<int>
typedef long long ll;
typedef long double ld;
typedef unsigned long long ull;
const long long inf = 2e9;
using namespace std;
int main() {
cin.sync_with_stdio(false);
ll n;
cin >> n;
vector<ll> a(n);
vector<ll> b(n);
rep(i, 0, n)cin >> a[i] >> b[i];
rep(i, 0, n*31) {
ll ind = i % n;
ll nxt = (i + 1) % n;
if (a[ind] <= b[ind])continue;
a[nxt] += (a[ind] - b[ind]) / 2;
ll change = a[ind] - b[ind];
change -= change % 2;
a[ind] -= change;
}
if (a == b)cout << "Yes";
else cout << "No";
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
204 KB |
Output is correct |
2 |
Correct |
1 ms |
204 KB |
Output is correct |
3 |
Correct |
1 ms |
204 KB |
Output is correct |
4 |
Correct |
1 ms |
204 KB |
Output is correct |
5 |
Correct |
1 ms |
204 KB |
Output is correct |
6 |
Correct |
1 ms |
204 KB |
Output is correct |
7 |
Correct |
1 ms |
308 KB |
Output is correct |
8 |
Incorrect |
1 ms |
204 KB |
Output isn't correct |
9 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
204 KB |
Output is correct |
2 |
Correct |
1 ms |
204 KB |
Output is correct |
3 |
Correct |
1 ms |
204 KB |
Output is correct |
4 |
Correct |
1 ms |
204 KB |
Output is correct |
5 |
Correct |
1 ms |
204 KB |
Output is correct |
6 |
Correct |
1 ms |
204 KB |
Output is correct |
7 |
Correct |
1 ms |
308 KB |
Output is correct |
8 |
Incorrect |
1 ms |
204 KB |
Output isn't correct |
9 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
204 KB |
Output is correct |
2 |
Correct |
1 ms |
204 KB |
Output is correct |
3 |
Correct |
1 ms |
204 KB |
Output is correct |
4 |
Correct |
1 ms |
204 KB |
Output is correct |
5 |
Correct |
1 ms |
204 KB |
Output is correct |
6 |
Correct |
1 ms |
204 KB |
Output is correct |
7 |
Correct |
1 ms |
308 KB |
Output is correct |
8 |
Incorrect |
1 ms |
204 KB |
Output isn't correct |
9 |
Halted |
0 ms |
0 KB |
- |