#include<bits/stdc++.h>
#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 = 1e15;
using namespace std;
ll ops = 0;
vector<int> wanted;
vector<int> v;
int main() {
ll n;
cin >> n;
wanted.resize(n);
v.resize(n);
rep(i, 0, n) {
cin >> v[i] >> wanted[i];
}
string res = "No";
rep(i, 0, 1 << n) {
rep(j, 0, n) {
if (!(1<<j & i))continue;
vector<int> v2 = v;
rep(o, 0, n) {
ll ind = (j + o) % n;
if (v2[ind] < wanted[ind])break;
if ((v2[ind] - wanted[ind]) % 2) {
break;
}
if (1 << ind & i) {
v2[(ind + 1) % n] += (v2[ind] - wanted[ind]) / 2;
v2[ind] -= (v2[ind] - wanted[ind]);
}
else if (v2[ind] != wanted[ind])break;
if (o == n - 1)res = "Yes";
}
}
}
cout << res << endl;
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
204 KB |
Output is correct |
2 |
Correct |
0 ms |
204 KB |
Output is correct |
3 |
Correct |
0 ms |
204 KB |
Output is correct |
4 |
Correct |
0 ms |
204 KB |
Output is correct |
5 |
Correct |
0 ms |
204 KB |
Output is correct |
6 |
Correct |
1 ms |
204 KB |
Output is correct |
7 |
Correct |
0 ms |
204 KB |
Output is correct |
8 |
Incorrect |
0 ms |
204 KB |
Output isn't correct |
9 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
204 KB |
Output is correct |
2 |
Correct |
0 ms |
204 KB |
Output is correct |
3 |
Correct |
0 ms |
204 KB |
Output is correct |
4 |
Correct |
0 ms |
204 KB |
Output is correct |
5 |
Correct |
0 ms |
204 KB |
Output is correct |
6 |
Correct |
1 ms |
204 KB |
Output is correct |
7 |
Correct |
0 ms |
204 KB |
Output is correct |
8 |
Incorrect |
0 ms |
204 KB |
Output isn't correct |
9 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
204 KB |
Output is correct |
2 |
Correct |
0 ms |
204 KB |
Output is correct |
3 |
Correct |
0 ms |
204 KB |
Output is correct |
4 |
Correct |
0 ms |
204 KB |
Output is correct |
5 |
Correct |
0 ms |
204 KB |
Output is correct |
6 |
Correct |
1 ms |
204 KB |
Output is correct |
7 |
Correct |
0 ms |
204 KB |
Output is correct |
8 |
Incorrect |
0 ms |
204 KB |
Output isn't correct |
9 |
Halted |
0 ms |
0 KB |
- |