// #pragma GCC target ("avx2")
// #pragma GCC optimization ("O3")
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ld = long double;
const int MOD = 1e9 + 7;
ll binpow(ll a, ll p, int mod = MOD) {
ll res = 1;
while (p) {
if (p & 1) {
(res *= a) %= mod;
}
p >>= 1;
(a *= a) %= mod;
}
return res;
}
ll gcd(ll a, ll b) {
return b == 0 ? a : gcd(b, a % b);
}
void solve() {
int n;
cin >> n;
vector<int> b;
int last = 0;
ll left = 0, right = 0;
for (int i = 0; i < n; i++) {
int a;
cin >> a;
if (i) b.push_back(a - last);
last = a;
if (i && b.back() >= 0) right += b.back() + 1;
}
ll ans = right;
for (int i = 0; i + 1 < n; i++) {
if (b[i] >= 0) right -= b[i] + 1;
if (b[i] <= 0) left -= b[i] - 1;
ans = min(ans, max(left, right));
}
cout << ans << '\n';
}
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
int T = 1;
// cin >> T;
for (int tc = 1; tc <= T; tc++) {
// cout << "Case #" << tc << ": ";
solve();
}
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Correct |
1 ms |
204 KB |
Output is correct |
| 3 |
Correct |
1 ms |
308 KB |
Output is correct |
| 4 |
Correct |
1 ms |
316 KB |
Output is correct |
| 5 |
Correct |
4 ms |
332 KB |
Output is correct |
| 6 |
Correct |
2 ms |
324 KB |
Output is correct |
| 7 |
Correct |
1 ms |
332 KB |
Output is correct |
| 8 |
Correct |
2 ms |
332 KB |
Output is correct |
| 9 |
Correct |
1 ms |
332 KB |
Output is correct |
| 10 |
Correct |
1 ms |
344 KB |
Output is correct |
| 11 |
Correct |
1 ms |
332 KB |
Output is correct |
| 12 |
Correct |
1 ms |
332 KB |
Output is correct |
| 13 |
Correct |
1 ms |
332 KB |
Output is correct |
| 14 |
Correct |
1 ms |
332 KB |
Output is correct |
| 15 |
Correct |
1 ms |
332 KB |
Output is correct |
| 16 |
Correct |
2 ms |
332 KB |
Output is correct |
| 17 |
Correct |
1 ms |
348 KB |
Output is correct |
| 18 |
Correct |
1 ms |
332 KB |
Output is correct |
| 19 |
Correct |
1 ms |
332 KB |
Output is correct |
| 20 |
Correct |
2 ms |
348 KB |
Output is correct |
| 21 |
Correct |
1 ms |
332 KB |
Output is correct |
| 22 |
Correct |
1 ms |
332 KB |
Output is correct |
| 23 |
Correct |
1 ms |
320 KB |
Output is correct |
| 24 |
Correct |
1 ms |
332 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Correct |
1 ms |
204 KB |
Output is correct |
| 3 |
Correct |
1 ms |
308 KB |
Output is correct |
| 4 |
Correct |
1 ms |
316 KB |
Output is correct |
| 5 |
Correct |
4 ms |
332 KB |
Output is correct |
| 6 |
Correct |
2 ms |
324 KB |
Output is correct |
| 7 |
Correct |
1 ms |
332 KB |
Output is correct |
| 8 |
Correct |
2 ms |
332 KB |
Output is correct |
| 9 |
Correct |
1 ms |
332 KB |
Output is correct |
| 10 |
Correct |
1 ms |
344 KB |
Output is correct |
| 11 |
Correct |
1 ms |
332 KB |
Output is correct |
| 12 |
Correct |
1 ms |
332 KB |
Output is correct |
| 13 |
Correct |
1 ms |
332 KB |
Output is correct |
| 14 |
Correct |
1 ms |
332 KB |
Output is correct |
| 15 |
Correct |
1 ms |
332 KB |
Output is correct |
| 16 |
Correct |
2 ms |
332 KB |
Output is correct |
| 17 |
Correct |
1 ms |
348 KB |
Output is correct |
| 18 |
Correct |
1 ms |
332 KB |
Output is correct |
| 19 |
Correct |
1 ms |
332 KB |
Output is correct |
| 20 |
Correct |
2 ms |
348 KB |
Output is correct |
| 21 |
Correct |
1 ms |
332 KB |
Output is correct |
| 22 |
Correct |
1 ms |
332 KB |
Output is correct |
| 23 |
Correct |
1 ms |
320 KB |
Output is correct |
| 24 |
Correct |
1 ms |
332 KB |
Output is correct |
| 25 |
Correct |
1 ms |
332 KB |
Output is correct |
| 26 |
Correct |
33 ms |
3112 KB |
Output is correct |
| 27 |
Correct |
49 ms |
3080 KB |
Output is correct |
| 28 |
Correct |
36 ms |
3136 KB |
Output is correct |
| 29 |
Correct |
34 ms |
3060 KB |
Output is correct |
| 30 |
Correct |
26 ms |
2496 KB |
Output is correct |
| 31 |
Correct |
28 ms |
3128 KB |
Output is correct |
| 32 |
Correct |
42 ms |
3056 KB |
Output is correct |
| 33 |
Correct |
27 ms |
3132 KB |
Output is correct |
| 34 |
Correct |
30 ms |
3136 KB |
Output is correct |
| 35 |
Correct |
25 ms |
2368 KB |
Output is correct |
| 36 |
Correct |
22 ms |
2460 KB |
Output is correct |
| 37 |
Correct |
22 ms |
2484 KB |
Output is correct |
| 38 |
Correct |
27 ms |
3092 KB |
Output is correct |
| 39 |
Correct |
30 ms |
3136 KB |
Output is correct |
| 40 |
Correct |
27 ms |
3120 KB |
Output is correct |
| 41 |
Correct |
27 ms |
3088 KB |
Output is correct |
| 42 |
Correct |
26 ms |
2940 KB |
Output is correct |
| 43 |
Correct |
28 ms |
3136 KB |
Output is correct |
| 44 |
Correct |
26 ms |
3008 KB |
Output is correct |
| 45 |
Correct |
26 ms |
3096 KB |
Output is correct |
| 46 |
Correct |
27 ms |
3132 KB |
Output is correct |
| 47 |
Correct |
26 ms |
3132 KB |
Output is correct |
| 48 |
Correct |
30 ms |
3132 KB |
Output is correct |
