#include <bits/stdc++.h>
using namespace std;
#define int long long
const int MAXN = 1e5 + 25;
pair <int, int> sparse[MAXN][17];
int a[MAXN], n;
int pref[MAXN];
pair <int, int> query (int l, int r) {
int m = __lg(r - l + 1);
auto x = max(sparse[m][l], sparse[m][r - (1 << m) + 1]);
x.second *= -1;
return x;
}
int get (int l, int r) {
if (l > r) return 0;
return pref[r] - pref[l - 1];
}
map <pair <int, int>, int> memo;
int ans (int l, int r) {
if (l > r) return 0;
if (l == r) return 1;
if (memo.count({l, r})) return memo[{l, r}];
auto u = query(l, r);
int ret = 1;
if (get(l, u.second - 1) >= a[u.second]) ret += ans(l, u.second - 1);
if (get(u.second + 1, r) >= a[u.second]) ret += ans(u.second + 1, r);
return memo[{l, r}] = ret;
}
signed main () {
//ios::sync_with_stdio(0); cin.tie(0);
cin >> n;
for (int i = 1; i <= n; i++) {
cin >> a[i];
sparse[0][i] = {a[i], -i};
pref[i] = a[i] + pref[i - 1];
}
for (int i = 1; i < 17; i++) {
for (int j = 1; j + (1 << i) - 1 <= n; j++) {
sparse[i][j] = max(sparse[i - 1][j], sparse[i - 1][j + (1 << (i - 1))]);
}
}
int q;
cin >> q;
while (q--) {
int t;
cin >> t;
int l, r;
cin >> l >> r;
cout << ans(l, r) << '\n';
}
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
1 ms |
2396 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2396 KB |
Output is correct |
2 |
Runtime error |
731 ms |
1048576 KB |
Execution killed with signal 9 |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
1 ms |
2396 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2396 KB |
Output is correct |
2 |
Runtime error |
731 ms |
1048576 KB |
Execution killed with signal 9 |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2396 KB |
Output is correct |
2 |
Runtime error |
731 ms |
1048576 KB |
Execution killed with signal 9 |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
1 ms |
2396 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |