#include <bits/stdc++.h>
using namespace std;
#define int long long
const int N = (int) 1e6 + 7;
int n;
int a[N];
int b[N];
signed main() {
ios::sync_with_stdio(0); cin.tie(0);
//freopen ("input", "r", stdin);
cin >> n;
int sa = 0, sb = 0;
for (int i = 0; i < n; i++) {
cin >> a[i] >> b[i];
sa += a[i];
sb += b[i];
}
if (sb == 0) {
if (sa == 0) {
cout << "Yes\n";
} else {
cout << "No\n";
}
exit(0);
}
while (true) {
bool change = false;
for (int i = 0; i < n; i++) {
int j = (i + 1) % n;
int extra = a[i] - b[i];
if (extra >= 1) {
change = true;
a[i] -= (extra + 1) / 2 * 2;
a[j] += (extra + 1) / 2;
}
}
if (!change) {
break;
}
}
for (int i = 0; i < n; i++) {
if (a[i] != b[i]) {
cout << "No\n";
exit(0);
}
}
cout << "Yes\n";
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 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 |
Correct |
0 ms |
204 KB |
Output is correct |
9 |
Correct |
0 ms |
204 KB |
Output is correct |
10 |
Correct |
0 ms |
204 KB |
Output is correct |
11 |
Correct |
0 ms |
332 KB |
Output is correct |
12 |
Correct |
0 ms |
204 KB |
Output is correct |
13 |
Correct |
0 ms |
204 KB |
Output is correct |
14 |
Correct |
0 ms |
204 KB |
Output is correct |
15 |
Correct |
0 ms |
204 KB |
Output is correct |
16 |
Correct |
1 ms |
204 KB |
Output is correct |
17 |
Correct |
0 ms |
204 KB |
Output is correct |
18 |
Correct |
0 ms |
204 KB |
Output is correct |
19 |
Correct |
0 ms |
204 KB |
Output is correct |
20 |
Correct |
0 ms |
204 KB |
Output is correct |
21 |
Correct |
1 ms |
324 KB |
Output is correct |
22 |
Correct |
1 ms |
328 KB |
Output is correct |
23 |
Correct |
1 ms |
208 KB |
Output is correct |
24 |
Correct |
0 ms |
208 KB |
Output is correct |
25 |
Correct |
0 ms |
336 KB |
Output is correct |
26 |
Correct |
0 ms |
336 KB |
Output is correct |
27 |
Correct |
0 ms |
208 KB |
Output is correct |
28 |
Correct |
0 ms |
208 KB |
Output is correct |
29 |
Correct |
0 ms |
208 KB |
Output is correct |
30 |
Correct |
0 ms |
208 KB |
Output is correct |
31 |
Correct |
0 ms |
288 KB |
Output is correct |
32 |
Correct |
1 ms |
224 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 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 |
Correct |
0 ms |
204 KB |
Output is correct |
9 |
Correct |
0 ms |
204 KB |
Output is correct |
10 |
Correct |
0 ms |
204 KB |
Output is correct |
11 |
Correct |
0 ms |
332 KB |
Output is correct |
12 |
Correct |
0 ms |
204 KB |
Output is correct |
13 |
Correct |
0 ms |
204 KB |
Output is correct |
14 |
Correct |
0 ms |
204 KB |
Output is correct |
15 |
Correct |
0 ms |
204 KB |
Output is correct |
16 |
Correct |
1 ms |
204 KB |
Output is correct |
17 |
Correct |
0 ms |
204 KB |
Output is correct |
18 |
Correct |
0 ms |
204 KB |
Output is correct |
19 |
Correct |
0 ms |
204 KB |
Output is correct |
20 |
Correct |
0 ms |
204 KB |
Output is correct |
21 |
Correct |
1 ms |
324 KB |
Output is correct |
22 |
Correct |
1 ms |
328 KB |
Output is correct |
23 |
Correct |
1 ms |
208 KB |
Output is correct |
24 |
Correct |
0 ms |
208 KB |
Output is correct |
25 |
Correct |
0 ms |
336 KB |
Output is correct |
26 |
Correct |
0 ms |
336 KB |
Output is correct |
27 |
Correct |
0 ms |
208 KB |
Output is correct |
28 |
Correct |
0 ms |
208 KB |
Output is correct |
29 |
Correct |
0 ms |
208 KB |
Output is correct |
30 |
Correct |
0 ms |
208 KB |
Output is correct |
31 |
Correct |
0 ms |
288 KB |
Output is correct |
32 |
Correct |
1 ms |
224 KB |
Output is correct |
33 |
Correct |
0 ms |
208 KB |
Output is correct |
34 |
Correct |
1 ms |
208 KB |
Output is correct |
35 |
Correct |
1 ms |
208 KB |
Output is correct |
36 |
Correct |
1 ms |
208 KB |
Output is correct |
37 |
Correct |
1 ms |
324 KB |
Output is correct |
38 |
Correct |
0 ms |
208 KB |
Output is correct |
39 |
Correct |
0 ms |
324 KB |
Output is correct |
40 |
Correct |
1 ms |
324 KB |
Output is correct |
41 |
Correct |
1 ms |
336 KB |
Output is correct |
42 |
Correct |
0 ms |
208 KB |
Output is correct |
43 |
Correct |
0 ms |
336 KB |
Output is correct |
44 |
Correct |
0 ms |
208 KB |
Output is correct |
45 |
Correct |
0 ms |
208 KB |
Output is correct |
46 |
Correct |
0 ms |
336 KB |
Output is correct |
47 |
Correct |
0 ms |
208 KB |
Output is correct |
48 |
Correct |
0 ms |
208 KB |
Output is correct |
49 |
Correct |
0 ms |
208 KB |
Output is correct |
50 |
Correct |
0 ms |
324 KB |
Output is correct |
51 |
Correct |
1 ms |
328 KB |
Output is correct |
52 |
Correct |
0 ms |
208 KB |
Output is correct |
53 |
Correct |
0 ms |
208 KB |
Output is correct |
54 |
Correct |
1 ms |
324 KB |
Output is correct |
55 |
Correct |
1 ms |
208 KB |
Output is correct |
56 |
Correct |
1 ms |
208 KB |
Output is correct |
57 |
Correct |
1 ms |
208 KB |
Output is correct |
58 |
Correct |
0 ms |
324 KB |
Output is correct |
59 |
Correct |
0 ms |
336 KB |
Output is correct |
60 |
Correct |
0 ms |
208 KB |
Output is correct |
61 |
Correct |
0 ms |
208 KB |
Output is correct |
62 |
Correct |
1 ms |
208 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 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 |
Correct |
0 ms |
204 KB |
Output is correct |
9 |
Correct |
0 ms |
204 KB |
Output is correct |
10 |
Correct |
0 ms |
204 KB |
Output is correct |
11 |
Correct |
0 ms |
332 KB |
Output is correct |
12 |
Correct |
0 ms |
204 KB |
Output is correct |
13 |
Correct |
0 ms |
204 KB |
Output is correct |
14 |
Correct |
0 ms |
204 KB |
Output is correct |
15 |
Correct |
0 ms |
204 KB |
Output is correct |
16 |
Correct |
1 ms |
204 KB |
Output is correct |
17 |
Correct |
0 ms |
204 KB |
Output is correct |
18 |
Correct |
0 ms |
204 KB |
Output is correct |
19 |
Correct |
0 ms |
204 KB |
Output is correct |
20 |
Correct |
0 ms |
204 KB |
Output is correct |
21 |
Correct |
1 ms |
324 KB |
Output is correct |
22 |
Correct |
1 ms |
328 KB |
Output is correct |
23 |
Correct |
1 ms |
208 KB |
Output is correct |
24 |
Correct |
0 ms |
208 KB |
Output is correct |
25 |
Correct |
0 ms |
336 KB |
Output is correct |
26 |
Correct |
0 ms |
336 KB |
Output is correct |
27 |
Correct |
0 ms |
208 KB |
Output is correct |
28 |
Correct |
0 ms |
208 KB |
Output is correct |
29 |
Correct |
0 ms |
208 KB |
Output is correct |
30 |
Correct |
0 ms |
208 KB |
Output is correct |
31 |
Correct |
0 ms |
288 KB |
Output is correct |
32 |
Correct |
1 ms |
224 KB |
Output is correct |
33 |
Correct |
0 ms |
208 KB |
Output is correct |
34 |
Correct |
1 ms |
208 KB |
Output is correct |
35 |
Correct |
1 ms |
208 KB |
Output is correct |
36 |
Correct |
1 ms |
208 KB |
Output is correct |
37 |
Correct |
1 ms |
324 KB |
Output is correct |
38 |
Correct |
0 ms |
208 KB |
Output is correct |
39 |
Correct |
0 ms |
324 KB |
Output is correct |
40 |
Correct |
1 ms |
324 KB |
Output is correct |
41 |
Correct |
1 ms |
336 KB |
Output is correct |
42 |
Correct |
0 ms |
208 KB |
Output is correct |
43 |
Correct |
0 ms |
336 KB |
Output is correct |
44 |
Correct |
0 ms |
208 KB |
Output is correct |
45 |
Correct |
0 ms |
208 KB |
Output is correct |
46 |
Correct |
0 ms |
336 KB |
Output is correct |
47 |
Correct |
0 ms |
208 KB |
Output is correct |
48 |
Correct |
0 ms |
208 KB |
Output is correct |
49 |
Correct |
0 ms |
208 KB |
Output is correct |
50 |
Correct |
0 ms |
324 KB |
Output is correct |
51 |
Correct |
1 ms |
328 KB |
Output is correct |
52 |
Correct |
0 ms |
208 KB |
Output is correct |
53 |
Correct |
0 ms |
208 KB |
Output is correct |
54 |
Correct |
1 ms |
324 KB |
Output is correct |
55 |
Correct |
1 ms |
208 KB |
Output is correct |
56 |
Correct |
1 ms |
208 KB |
Output is correct |
57 |
Correct |
1 ms |
208 KB |
Output is correct |
58 |
Correct |
0 ms |
324 KB |
Output is correct |
59 |
Correct |
0 ms |
336 KB |
Output is correct |
60 |
Correct |
0 ms |
208 KB |
Output is correct |
61 |
Correct |
0 ms |
208 KB |
Output is correct |
62 |
Correct |
1 ms |
208 KB |
Output is correct |
63 |
Correct |
213 ms |
35372 KB |
Output is correct |
64 |
Correct |
114 ms |
19816 KB |
Output is correct |
65 |
Correct |
209 ms |
34752 KB |
Output is correct |
66 |
Correct |
124 ms |
19784 KB |
Output is correct |
67 |
Correct |
114 ms |
21264 KB |
Output is correct |
68 |
Correct |
141 ms |
23620 KB |
Output is correct |
69 |
Correct |
224 ms |
35444 KB |
Output is correct |
70 |
Correct |
122 ms |
19788 KB |
Output is correct |
71 |
Correct |
115 ms |
21276 KB |
Output is correct |
72 |
Correct |
133 ms |
23628 KB |
Output is correct |
73 |
Correct |
210 ms |
35444 KB |
Output is correct |
74 |
Correct |
106 ms |
19860 KB |
Output is correct |
75 |
Correct |
115 ms |
21240 KB |
Output is correct |
76 |
Correct |
138 ms |
23700 KB |
Output is correct |
77 |
Correct |
205 ms |
35232 KB |
Output is correct |
78 |
Correct |
132 ms |
27504 KB |
Output is correct |
79 |
Correct |
173 ms |
27576 KB |
Output is correct |
80 |
Correct |
149 ms |
27464 KB |
Output is correct |
81 |
Correct |
150 ms |
27528 KB |
Output is correct |
82 |
Correct |
89 ms |
19784 KB |
Output is correct |
83 |
Correct |
88 ms |
19800 KB |
Output is correct |
84 |
Correct |
105 ms |
19856 KB |
Output is correct |
85 |
Correct |
217 ms |
36356 KB |
Output is correct |
86 |
Correct |
218 ms |
36296 KB |
Output is correct |
87 |
Correct |
188 ms |
28664 KB |
Output is correct |
88 |
Correct |
190 ms |
28576 KB |
Output is correct |