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QOJ
ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#282648 | #7616. Jump Graph | light_ink_dots# | ML | 2ms | 14072kb | C++14 | 4.0kb | 2023-12-12 17:13:36 | 2023-12-12 17:13:37 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
const int maxn = 300010, maxlg = 20;
int lg[maxn], st[maxlg][maxn];
int pre[maxn], nxt[maxn];
int p[maxn], rev[maxn], n;
void solve(int, int);
long long ans[maxn];
int main() {
scanf("%d", &n);
for (int i = 1; i <= n; i++) scanf("%d", p + i), rev[p[i]] = i, st[0][i] = p[i];
for (int i = 2; i <= n; i++) lg[i] = lg[i >> 1] + 1;
for (int l = 1; l <= lg[n]; l++)
for (int i = 1; i + (1 << l) - 1 <= n; i++)
st[l][i] = max(st[l - 1][i], st[l - 1][i + (1 << (l - 1))]);
for (int i = 1; i <= n; i++) {
if (p[i - 1] > p[i]) {
pre[i] = i - 1;
continue;
}
pre[i] = pre[i - 1];
while (pre[i] && p[pre[i]] < p[i]) pre[i]--;
}
nxt[n + 1] = n + 1;
for (int i = n; i; i--) {
if (p[i + 1] > p[i]) {
nxt[i] = i + 1;
continue;
}
nxt[i] = nxt[i + 1];
while (nxt[i] != n + 1 && p[nxt[i]] < p[i]) nxt[i]++;
}
solve(1, n);
for (int i = 1; i <= n; i++) printf("%lld ", ans[i]);
printf("\n");
return 0;
}
int rmq(int l, int r) {
int Lg = lg[r - l + 1];
return max(st[Lg][l], st[Lg][r - (1 << Lg) + 1]);
}
long long c(int, int);
long long tL(const int r) {
static unordered_map<int, long long> mp;
if (pre[r] == 0)
return 0;
if (mp.count(r))
return mp[r];
return mp[r] = c(pre[r], r) + tL(pre[r]) - 1;
}
long long tR(const int l) {
static unordered_map<int, long long> mp;
if (nxt[l] == n + 1)
return 0;
if (mp.count(l))
return mp[l];
return mp[l] = c(l, nxt[l]) + tR(nxt[l]) - 1;
}
long long c(int l, int r) {
static unordered_map<long long, long long> mp;
if (l > r)
return 0;
if (l == r)
return 1;
long long I = 1ll * l * (n + 1) + r;
if (mp.count(I))
return mp[I];
if (nxt[l] >= r && pre[r] <= l)
return mp[I] = c(l + 1, r - 1) + r - l + 1;
int mx = rmq(l, r), p = rev[mx];
return mp[I] = tR(l) - tR(p) + tL(r) - tL(p) + 1;
}
long long cL(int l) {
static unordered_map<int, long long> mp;
if (l > n)
return 0;
if (mp.count(l))
return mp[l];
if (nxt[l] == n + 1)
return mp[l] = cL(l + 1) + n - l + 1;
return mp[l] = c(l + 1, nxt[l] - 1) + cL(nxt[l]) + nxt[l] - l;
}
long long cR(int r) {
static unordered_map<int, long long> mp;
if (!r)
return 0;
if (mp.count(r))
return mp[r];
if (pre[r] == 0)
return mp[r] = cR(r - 1) + r;
return mp[r] = c(pre[r] + 1, r - 1) + cR(pre[r]) + r - pre[r];
}
void s(int l, int r) {
if (l > r)
return;
int mx = rmq(l, r), p = rev[mx];
auto L = c(p, r + 1) - 1, R = c(l - 1, p) - 1;
ans[l] += L, ans[p] -= L, ans[p + 1] += R, ans[r + 1] -= R;
auto x = c(l - 1, p - 1) + c(p + 1, r + 1) - 2;
ans[p] += x, ans[p + 1] -= x;
s(l, p - 1), s(p + 1, r);
return;
}
void sL(int r) {
if (!r)
return;
int mx = rmq(1, r), p = rev[mx];
auto L = c(p, r + 1) - 1, R = cR(p);
ans[1] += L, ans[p] -= L, ans[p + 1] += R, ans[r + 1] -= R;
auto x = cR(p - 1) + c(p + 1, r + 1) - 1;
ans[p] += x, ans[p + 1] -= x;
sL(p - 1), s(p + 1, r);
return;
}
void sR(int l) {
if (l == n + 1)
return;
int mx = rmq(l, n), p = rev[mx];
auto L = cL(p), R = c(l - 1, p) - 1;
ans[l] += L, ans[p] -= L, ans[p + 1] += R, ans[n + 1] -= R;
auto x = cL(p + 1) + c(l - 1, p - 1) - 1;
ans[p] += x, ans[p + 1] -= x;
s(l, p - 1), sR(p + 1);
return;
}
void solve(int l, int r) {
int mx = rmq(l, r), p = rev[mx];
auto L = cL(p), R = cR(p);
ans[1] += L, ans[p] -= L, ans[p + 1] += R, ans[n + 1] -= R;
auto x = cR(p - 1) + cL(p + 1);
ans[p] += x, ans[p + 1] -= x;
sL(p - 1), sR(p + 1);
for (int i = 1; i <= n; i++) ans[i] += ans[i - 1];
return;
}
详细
Test #1:
score: 100
Accepted
time: 0ms
memory: 10056kb
input:
6 1 6 3 2 5 4
output:
11 7 7 7 6 8
result:
ok single line: '11 7 7 7 6 8 '
Test #2:
score: 0
Accepted
time: 2ms
memory: 12080kb
input:
2 1 2
output:
1 1
result:
ok single line: '1 1 '
Test #3:
score: 0
Accepted
time: 2ms
memory: 14072kb
input:
36 9 29 1 3 14 31 24 21 10 18 22 16 8 7 15 12 17 19 25 28 27 34 11 6 32 4 20 13 2 35 23 26 33 36 30 5
output:
92 89 90 90 91 78 73 71 71 71 65 65 64 64 63 65 65 70 74 85 95 91 111 111 109 111 110 110 110 107 136 136 137 136 168 168
result:
ok single line: '92 89 90 90 91 78 73 71 71 71 ...10 107 136 136 137 136 168 168 '
Test #4:
score: -100
Memory Limit Exceeded
input:
63 30 17 34 8 29 57 2 62 35 27 24 22 54 53 60 37 31 19 1 5 20 14 3 36 38 40 56 39 50 32 51 9 15 52 55 45 63 41 6 47 23 7 33 10 26 61 16 58 43 42 44 48 28 12 49 11 59 4 21 25 46 13 18