#include <bits/stdc++.h>
using namespace std;
//#pragma GCC optimize ("O3")
//#pragma GCC target ("sse4")
#define endl "\n"
typedef long long ll;
template<class T, class T2> inline ostream &operator <<(ostream &out, const pair<T, T2> &x) { out << x.first << " " << x.second; return out;}
template<class T, class T2> inline istream &operator >>(istream &in, pair<T, T2> &x) { in >> x.first >> x.second; return in;}
template<class T, class T2> inline bool chkmax(T &x, const T2 &y) { return x < y ? x = y, 1 : 0; }
template<class T, class T2> inline bool chkmin(T &x, const T2 &y) { return x > y ? x = y, 1 : 0; }
const ll mod = 1e9 + 7;
#define out(x) "{" << (#x) << ": " << x << "} "
const ll MAX_N = 1e6 + 10;
ll arr[MAX_N], target[MAX_N], n;
bool cycle() {
bool change = false;
for(ll i = 0; i < n; i ++) {
if(arr[i] <= target[i]) {continue;}
ll need;
if(arr[i] % 2 != target[i] % 2) {
need = arr[i] - target[i] - 1;
} else {
need = arr[i] - target[i];
}
chkmax(need, 2);
if(arr[i] < need || need == 0) {continue;}
change = true;
arr[i] -= need;
arr[(i + 1) % n] += need / 2;
}
return change;
}
signed main() {
ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
cin >> n;
for(ll i = 0; i < n; i ++) {
cin >> arr[i] >> target[i];
}
while(cycle()) {}
for(ll i = 0; i < n; i ++) {
if(arr[i] != target[i]) {
cout << "No" << endl;
return 0;
}
}
cout << "Yes" << endl;
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Correct |
0 ms |
384 KB |
Output is correct |
| 3 |
Correct |
0 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
364 KB |
Output is correct |
| 5 |
Correct |
1 ms |
364 KB |
Output is correct |
| 6 |
Correct |
0 ms |
364 KB |
Output is correct |
| 7 |
Correct |
0 ms |
364 KB |
Output is correct |
| 8 |
Correct |
1 ms |
292 KB |
Output is correct |
| 9 |
Correct |
1 ms |
364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
364 KB |
Output is correct |
| 11 |
Correct |
1 ms |
364 KB |
Output is correct |
| 12 |
Correct |
1 ms |
364 KB |
Output is correct |
| 13 |
Correct |
1 ms |
364 KB |
Output is correct |
| 14 |
Correct |
1 ms |
364 KB |
Output is correct |
| 15 |
Correct |
1 ms |
364 KB |
Output is correct |
| 16 |
Correct |
1 ms |
492 KB |
Output is correct |
| 17 |
Correct |
0 ms |
364 KB |
Output is correct |
| 18 |
Correct |
1 ms |
364 KB |
Output is correct |
| 19 |
Correct |
0 ms |
364 KB |
Output is correct |
| 20 |
Correct |
1 ms |
364 KB |
Output is correct |
| 21 |
Correct |
1 ms |
364 KB |
Output is correct |
| 22 |
Correct |
1 ms |
364 KB |
Output is correct |
| 23 |
Correct |
1 ms |
384 KB |
Output is correct |
| 24 |
Correct |
1 ms |
364 KB |
Output is correct |
| 25 |
Correct |
1 ms |
364 KB |
Output is correct |
| 26 |
Correct |
1 ms |
364 KB |
Output is correct |
| 27 |
Correct |
0 ms |
364 KB |
Output is correct |
| 28 |
Correct |
1 ms |
364 KB |
Output is correct |
| 29 |
Correct |
0 ms |
364 KB |
Output is correct |
| 30 |
Correct |
0 ms |
364 KB |
Output is correct |
| 31 |
Correct |
1 ms |
364 KB |
Output is correct |
| 32 |
Correct |
1 ms |
364 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Correct |
0 ms |
384 KB |
Output is correct |
| 3 |
Correct |
0 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
364 KB |
Output is correct |
| 5 |
Correct |
1 ms |
364 KB |
Output is correct |
| 6 |
Correct |
0 ms |
364 KB |
Output is correct |
| 7 |
Correct |
0 ms |
364 KB |
Output is correct |
| 8 |
Correct |
1 ms |
292 KB |
Output is correct |
| 9 |
Correct |
1 ms |
364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
364 KB |
Output is correct |
| 11 |
Correct |
1 ms |
364 KB |
Output is correct |
| 12 |
Correct |
1 ms |
364 KB |
Output is correct |
| 13 |
Correct |
1 ms |
364 KB |
Output is correct |
| 14 |
Correct |
1 ms |
364 KB |
Output is correct |
| 15 |
Correct |
1 ms |
364 KB |
Output is correct |
| 16 |
Correct |
1 ms |
492 KB |
Output is correct |
| 17 |
Correct |
0 ms |
364 KB |
Output is correct |
| 18 |
Correct |
1 ms |
364 KB |
Output is correct |
| 19 |
Correct |
0 ms |
364 KB |
Output is correct |
| 20 |
Correct |
1 ms |
364 KB |
Output is correct |
| 21 |
Correct |
1 ms |
364 KB |
Output is correct |
| 22 |
Correct |
1 ms |
364 KB |
Output is correct |
| 23 |
Correct |
1 ms |
384 KB |
Output is correct |
| 24 |
Correct |
1 ms |
364 KB |
Output is correct |
| 25 |
Correct |
1 ms |
364 KB |
Output is correct |
| 26 |
Correct |
1 ms |
364 KB |
Output is correct |
| 27 |
Correct |
0 ms |
364 KB |
Output is correct |
| 28 |
Correct |
1 ms |
364 KB |
Output is correct |
| 29 |
Correct |
0 ms |
364 KB |
Output is correct |
| 30 |
Correct |
0 ms |
364 KB |
Output is correct |
| 31 |
Correct |
1 ms |
364 KB |
Output is correct |
| 32 |
Correct |
1 ms |
364 KB |
Output is correct |
| 33 |
Correct |
1 ms |
384 KB |
Output is correct |
| 34 |
Correct |
1 ms |
364 KB |
Output is correct |
| 35 |
Correct |
1 ms |
364 KB |
Output is correct |
| 36 |
Correct |
1 ms |
364 KB |
Output is correct |
| 37 |
Correct |
1 ms |
364 KB |
Output is correct |
| 38 |
Correct |
1 ms |
364 KB |
Output is correct |
| 39 |
Correct |
0 ms |
364 KB |
Output is correct |
| 40 |
Correct |
1 ms |
364 KB |
Output is correct |
| 41 |
Correct |
0 ms |
364 KB |
Output is correct |
| 42 |
Correct |
1 ms |
384 KB |
Output is correct |
| 43 |
Correct |
0 ms |
364 KB |
Output is correct |
| 44 |
Correct |
1 ms |
364 KB |
Output is correct |
| 45 |
Correct |
1 ms |
364 KB |
Output is correct |
| 46 |
Correct |
1 ms |
364 KB |
Output is correct |
| 47 |
Correct |
1 ms |
364 KB |
Output is correct |
| 48 |
Correct |
1 ms |
364 KB |
Output is correct |
| 49 |
Correct |
1 ms |
364 KB |
Output is correct |
| 50 |
Correct |
1 ms |
364 KB |
Output is correct |
| 51 |
Correct |
1 ms |
364 KB |
Output is correct |
| 52 |
Correct |
0 ms |
364 KB |
Output is correct |
| 53 |
Correct |
1 ms |
364 KB |
Output is correct |
| 54 |
Correct |
0 ms |
364 KB |
Output is correct |
| 55 |
Correct |
0 ms |
364 KB |
Output is correct |
| 56 |
Correct |
1 ms |
364 KB |
Output is correct |
| 57 |
Correct |
1 ms |
364 KB |
Output is correct |
| 58 |
Correct |
1 ms |
364 KB |
Output is correct |
| 59 |
Correct |
1 ms |
364 KB |
Output is correct |
| 60 |
Correct |
1 ms |
364 KB |
Output is correct |
| 61 |
Correct |
1 ms |
364 KB |
Output is correct |
| 62 |
Correct |
0 ms |
364 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Correct |
0 ms |
384 KB |
Output is correct |
| 3 |
Correct |
0 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
364 KB |
Output is correct |
| 5 |
Correct |
1 ms |
364 KB |
Output is correct |
| 6 |
Correct |
0 ms |
364 KB |
Output is correct |
| 7 |
Correct |
0 ms |
364 KB |
Output is correct |
| 8 |
Correct |
1 ms |
292 KB |
Output is correct |
| 9 |
Correct |
1 ms |
364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
364 KB |
Output is correct |
| 11 |
Correct |
1 ms |
364 KB |
Output is correct |
| 12 |
Correct |
1 ms |
364 KB |
Output is correct |
| 13 |
Correct |
1 ms |
364 KB |
Output is correct |
| 14 |
Correct |
1 ms |
364 KB |
Output is correct |
| 15 |
Correct |
1 ms |
364 KB |
Output is correct |
| 16 |
Correct |
1 ms |
492 KB |
Output is correct |
| 17 |
Correct |
0 ms |
364 KB |
Output is correct |
| 18 |
Correct |
1 ms |
364 KB |
Output is correct |
| 19 |
Correct |
0 ms |
364 KB |
Output is correct |
| 20 |
Correct |
1 ms |
364 KB |
Output is correct |
| 21 |
Correct |
1 ms |
364 KB |
Output is correct |
| 22 |
Correct |
1 ms |
364 KB |
Output is correct |
| 23 |
Correct |
1 ms |
384 KB |
Output is correct |
| 24 |
Correct |
1 ms |
364 KB |
Output is correct |
| 25 |
Correct |
1 ms |
364 KB |
Output is correct |
| 26 |
Correct |
1 ms |
364 KB |
Output is correct |
| 27 |
Correct |
0 ms |
364 KB |
Output is correct |
| 28 |
Correct |
1 ms |
364 KB |
Output is correct |
| 29 |
Correct |
0 ms |
364 KB |
Output is correct |
| 30 |
Correct |
0 ms |
364 KB |
Output is correct |
| 31 |
Correct |
1 ms |
364 KB |
Output is correct |
| 32 |
Correct |
1 ms |
364 KB |
Output is correct |
| 33 |
Correct |
1 ms |
384 KB |
Output is correct |
| 34 |
Correct |
1 ms |
364 KB |
Output is correct |
| 35 |
Correct |
1 ms |
364 KB |
Output is correct |
| 36 |
Correct |
1 ms |
364 KB |
Output is correct |
| 37 |
Correct |
1 ms |
364 KB |
Output is correct |
| 38 |
Correct |
1 ms |
364 KB |
Output is correct |
| 39 |
Correct |
0 ms |
364 KB |
Output is correct |
| 40 |
Correct |
1 ms |
364 KB |
Output is correct |
| 41 |
Correct |
0 ms |
364 KB |
Output is correct |
| 42 |
Correct |
1 ms |
384 KB |
Output is correct |
| 43 |
Correct |
0 ms |
364 KB |
Output is correct |
| 44 |
Correct |
1 ms |
364 KB |
Output is correct |
| 45 |
Correct |
1 ms |
364 KB |
Output is correct |
| 46 |
Correct |
1 ms |
364 KB |
Output is correct |
| 47 |
Correct |
1 ms |
364 KB |
Output is correct |
| 48 |
Correct |
1 ms |
364 KB |
Output is correct |
| 49 |
Correct |
1 ms |
364 KB |
Output is correct |
| 50 |
Correct |
1 ms |
364 KB |
Output is correct |
| 51 |
Correct |
1 ms |
364 KB |
Output is correct |
| 52 |
Correct |
0 ms |
364 KB |
Output is correct |
| 53 |
Correct |
1 ms |
364 KB |
Output is correct |
| 54 |
Correct |
0 ms |
364 KB |
Output is correct |
| 55 |
Correct |
0 ms |
364 KB |
Output is correct |
| 56 |
Correct |
1 ms |
364 KB |
Output is correct |
| 57 |
Correct |
1 ms |
364 KB |
Output is correct |
| 58 |
Correct |
1 ms |
364 KB |
Output is correct |
| 59 |
Correct |
1 ms |
364 KB |
Output is correct |
| 60 |
Correct |
1 ms |
364 KB |
Output is correct |
| 61 |
Correct |
1 ms |
364 KB |
Output is correct |
| 62 |
Correct |
0 ms |
364 KB |
Output is correct |
| 63 |
Correct |
254 ms |
35308 KB |
Output is correct |
| 64 |
Correct |
148 ms |
19940 KB |
Output is correct |
| 65 |
Correct |
254 ms |
35044 KB |
Output is correct |
| 66 |
Correct |
144 ms |
19940 KB |
Output is correct |
| 67 |
Correct |
152 ms |
21444 KB |
Output is correct |
| 68 |
Correct |
165 ms |
23648 KB |
Output is correct |
| 69 |
Correct |
254 ms |
35520 KB |
Output is correct |
| 70 |
Correct |
150 ms |
19944 KB |
Output is correct |
| 71 |
Correct |
153 ms |
21348 KB |
Output is correct |
| 72 |
Correct |
171 ms |
23780 KB |
Output is correct |
| 73 |
Correct |
249 ms |
35432 KB |
Output is correct |
| 74 |
Correct |
143 ms |
19944 KB |
Output is correct |
| 75 |
Correct |
150 ms |
21348 KB |
Output is correct |
| 76 |
Correct |
164 ms |
23652 KB |
Output is correct |
| 77 |
Correct |
248 ms |
35428 KB |
Output is correct |
| 78 |
Correct |
196 ms |
27748 KB |
Output is correct |
| 79 |
Correct |
195 ms |
27620 KB |
Output is correct |
| 80 |
Correct |
205 ms |
27616 KB |
Output is correct |
| 81 |
Correct |
202 ms |
27748 KB |
Output is correct |
| 82 |
Correct |
132 ms |
20068 KB |
Output is correct |
| 83 |
Correct |
124 ms |
20016 KB |
Output is correct |
| 84 |
Correct |
132 ms |
19940 KB |
Output is correct |
| 85 |
Correct |
278 ms |
36408 KB |
Output is correct |
| 86 |
Correct |
282 ms |
36452 KB |
Output is correct |
| 87 |
Correct |
216 ms |
28772 KB |
Output is correct |
| 88 |
Correct |
222 ms |
28772 KB |
Output is correct |
