#include <bits/stdc++.h>
using namespace std;
#define type(x) __typeof((x).begin())
#define foreach(it, x) for(type(x) it = (x).begin(); it != (x).end(); it++)
typedef long long ll;
typedef pair < int, int > ii;
const int inf = 1e9 + 333;
const ll linf = 1e18 + inf;
const int N = 1 << 17;
int t[N << 1];
int getMax(int l, int r) {
int ans = 0;
for(l += N, r += N; l <= r; l = (l + 1) >> 1, r = (r - 1) >> 1) {
if(l & 1) ans = max(ans, t[l]);
if(~r & 1) ans = max(ans, t[r]);
}
return ans;
}
int n, m, me;
vector < ii > v[N << 1];
namespace tree{
ii t[N << 1];
ii merge(ii x, ii y) {
return ii(max(x.first, y.first), x.second + y.second);
}
void add(int x, int l, int r, int x1, int k) {
if(l == r) {
if(k == -1)
t[x] = ii(0, 0);
else
t[x] = ii(k, 1);
return;
}
int m = l + r >> 1;
if(x1 <= m)
add(x + x, l, m, x1, k);
else
add(x + x + 1, m + 1, r, x1, k);
t[x] = merge(t[x + x], t[x + x + 1]);
}
int get(int x, int l, int r, int k) {
if(l == r) {
return t[x].first < me;
}
int m = l + r >> 1;
if(t[x + x].first < me) {
return t[x + x].second + get(x + x + 1, m + 1, r, k);
}
return get(x + x, l, m, k);
}
}
int curTime;
void add(int x, int l, int r, int x1, int x2, int k) {
if(r < x1 or x2 < l)
return;
if(x1 <= l and r <= x2) {
v[x].push_back(ii(k, curTime));
return;
}
int m = l + r >> 1;
add(x + x, l, m, x1, x2, k);
add(x + x + 1, m + 1, r, x1, x2, k);
}
int ans = -inf, best = -1;
void solve(int x, int l, int r) {
foreach(it, v[x]) {
int u = it -> first;
int t = it -> second;
//printf("add %d %d\n", t, u);
tree :: add(1, 0, m - 1, t, u);
}
if(l == r) {
int k = tree :: get(1, 0, m - 1, me);
//printf("l = %d k = %d\n", l, k);
if(k > ans) {
ans = k;
best = l;
}
}
else {
int m = l + r >> 1;
solve(x + x, l, m);
solve(x + x + 1, m + 1, r);
}
foreach(it, v[x]) {
int u = it -> first;
int t = it -> second;
//printf("del %d %d\n", t, u);
tree :: add(1, 0, m - 1, t, -1);
}
}
namespace makeT{
ii a[N];
int t[N << 1];
void init(int x, int l, int r) {
if(l == r) {
t[x] = 1;
return;
}
int m = l + r >> 1;
init(x + x, l, m);
init(x + x + 1, m + 1, r);
t[x] = t[x + x] + t[x + x + 1];
}
void init() {
for(int i = 0; i < n; i++)
a[i] = ii(i, i);
init(1, 0, n - 1);
}
void del(int x, int l, int r, int x1, int x2) {
if(r < x1 or x2 < l or !t[x])
return;
if(x1 <= l and r <= x2) {
t[x] = 0;
return;
}
int m = l + r >> 1;
del(x + x, l, m, x1, x2);
del(x + x + 1, m + 1, r, x1, x2);
t[x] = t[x + x] + t[x + x + 1];
}
void up(int l, int r) {
a[l] = ii(l, r);
del(1, 0, n - 1, l + 1, r);
}
int get(int x, int l, int r, int k) {
if(l == r)
return l;
int m = l + r >> 1;
if(t[x + x] >= k)
return get(x + x, l, m, k);
return get(x + x + 1, m + 1, r, k - t[x + x]);
}
ii get(int x) {
return a[get(1, 0, n - 1, x)];
}
};
int GetBestPosition(int n, int m, int me, int a[], int L[], int R[]) {
:: n = n;
:: m = m;
:: me = me;
//puts("hereWeGo");
makeT :: init();
for(int i = 0; i < m; i++) {
L[i] = makeT :: get(L[i] + 1).first;
R[i] = makeT :: get(R[i] + 1).second;
makeT :: up(L[i], R[i]);
//printf("%d %d\n", L[i], R[i]);
}
for(int i = 0; i < n; i++)
t[i + N] = a[i];
for(int i = N - 1; i >= 1; i--)
t[i] = max(t[i + i], t[i + i + 1]);
for(int i = 0; i < m; i++) {
int l = L[i];
int r = R[i] - 1;
int res = getMax(l, r);
add(1, 0, n - 1, L[i], R[i], res);
curTime++;
//printf("L = %d R = %d res = %d\n", L[i], R[i], res);
}
solve(1, 0, n - 1);
assert(best != -1);
return best;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
12988 KB |
Output is correct |
2 |
Correct |
0 ms |
12988 KB |
Output is correct |
3 |
Correct |
2 ms |
12988 KB |
Output is correct |
4 |
Correct |
4 ms |
12988 KB |
Output is correct |
5 |
Correct |
0 ms |
12988 KB |
Output is correct |
6 |
Correct |
2 ms |
12988 KB |
Output is correct |
7 |
Correct |
4 ms |
12988 KB |
Output is correct |
8 |
Correct |
0 ms |
12988 KB |
Output is correct |
9 |
Correct |
3 ms |
12988 KB |
Output is correct |
10 |
Correct |
0 ms |
12988 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
12988 KB |
Output is correct |
2 |
Correct |
17 ms |
13660 KB |
Output is correct |
3 |
Correct |
2 ms |
12988 KB |
Output is correct |
4 |
Correct |
14 ms |
13516 KB |
Output is correct |
5 |
Correct |
18 ms |
13516 KB |
Output is correct |
6 |
Correct |
6 ms |
13120 KB |
Output is correct |
7 |
Correct |
20 ms |
13516 KB |
Output is correct |
8 |
Correct |
19 ms |
13516 KB |
Output is correct |
9 |
Correct |
0 ms |
12988 KB |
Output is correct |
10 |
Correct |
13 ms |
13252 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
79 ms |
15016 KB |
Output is correct |
2 |
Correct |
574 ms |
30456 KB |
Output is correct |
3 |
Correct |
35 ms |
13644 KB |
Output is correct |
4 |
Correct |
491 ms |
27888 KB |
Output is correct |
5 |
Correct |
501 ms |
29144 KB |
Output is correct |
6 |
Correct |
175 ms |
17036 KB |
Output is correct |
7 |
Correct |
505 ms |
28912 KB |
Output is correct |
8 |
Correct |
543 ms |
29240 KB |
Output is correct |
9 |
Correct |
13 ms |
13380 KB |
Output is correct |
10 |
Correct |
35 ms |
14040 KB |
Output is correct |