#include <bits/stdc++.h>
#define in(x) freopen(x, "r", stdin)
#define out(x) freopen(x, "w", stdout)
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>
//#pragma GCC optimize("Ofast")
//#pragma GCC optimize("unroll-loops")
//#pragma GCC optimize("-O3")
#define F first
#define S second
#define pb push_back
#define M ll(1e9 + 7)
#define sz(x) (int)x.size()
#define re return
#define oo ll(1e18)
#define el '\n'
#define pii pair <int, int>
#define all(x) (x).begin(), (x).end()
#define arr_all(x, n) (x + 1), (x + 1 + n)
#define vi vector<int>
#define eps (ld)1e-6
using namespace std;
//using namespace __gnu_pbds;
//typedef tree <int, null_type, less_equal <int> , rb_tree_tag, tree_order_statistics_node_update> ordered_set;
typedef long long ll;
typedef long double ld;
typedef unsigned long long ull;
typedef short int si;
const int N = 2e5 + 500;
int n;
int a[N], b[N];
int mxa, mxb;
ll ans;
int ta[4 * N], tb[4 * N];
void build(int v, int l, int r) {
if (l == r)
ta[v] = a[l], tb[v] = b[l];
else {
int md = (l + r) >> 1;
build(v * 2, l, md);
build(v * 2 + 1, md + 1, r);
ta[v] = min(ta[v * 2], ta[v * 2 + 1]);
tb[v] = min(tb[v * 2], tb[v * 2 + 1]);
}
}
int getlea(int v, int l, int r, int tl, int tr, int x) {
if (ta[v] >= x)
return -1;
if (l > r || tl > tr || tl > r || l > tr)
return -1;
if (l == r)
return l;
int md = (l + r) >> 1;
int cur = getlea(v * 2 + 1, md + 1, r, max(md + 1, tl), tr, x);
if (cur == -1)
return getlea(v * 2, l, md, tl, min(md, tr), x);
return cur;
}
int getria(int v, int l, int r, int tl, int tr, int x) {
if (ta[v] >= x)
return -1;
if (l > r || tl > tr || tl > r || l > tr)
return -1;
if (l == r)
return l;
int md = (l + r) >> 1;
int cur = getria(v * 2, l, md, tl, min(md, tr), x);
if (cur == -1)
return getria(v * 2 + 1, md + 1, r, max(md + 1, tl), tr, x);
return cur;
}
int getleb(int v, int l, int r, int tl, int tr, int x) {
if (tb[v] >= x)
return -1;
if (l > r || tl > tr || tl > r || l > tr)
return -1;
if (l == r)
return l;
int md = (l + r) >> 1;
int cur = getleb(v * 2 + 1, md + 1, r, max(md + 1, tl), tr, x);
if (cur == -1)
return getleb(v * 2, l, md, tl, min(md, tr), x);
return cur;
}
int getrib(int v, int l, int r, int tl, int tr, int x) {
if (tb[v] >= x)
return -1;
if (l > r || tl > tr || tl > r || l > tr)
return -1;
if (l == r)
return l;
int md = (l + r) >> 1;
int cur = getrib(v * 2, l, md, tl, min(md, tr), x);
if (cur == -1)
return getrib(v * 2 + 1, md + 1, r, max(md + 1, tl), tr, x);
return cur;
}
int geta(int v, int l, int r, int tl, int tr) {
if (l > r || tl > tr || tl > r || l > tr)
return 1e9;
if (l == tl && r == tr)
return ta[v];
int md = (l + r) >> 1;
return min(geta(v * 2, l, md, tl, min(md, tr)), geta(v * 2 + 1, md + 1, r, max(tl, md + 1), tr));
}
int getb(int v, int l, int r, int tl, int tr) {
if (l > r || tl > tr || tl > r || l > tr)
return 1e9;
if (l == tl && r == tr)
return tb[v];
int md = (l + r) >> 1;
return min(getb(v * 2, l, md, tl, min(md, tr)), getb(v * 2 + 1, md + 1, r, max(tl, md + 1), tr));
}
int main()
{
// srand(time(0));
ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
// in("turtle.in");
// out("turtle.out");
// inf("input.txt");
// out("output.txt");
cin >> n;
for (int i = 1; i <= n; i++) {
cin >> a[i] >> b[i];
mxa = max(a[i], mxa);
mxb = max(b[i], mxb);
}
build(1, 0, n + 1);
for (int i = 1; i <= n; i++) {
int l = getlea(1, 0, n + 1, 0, i - 1, a[i]);
int r = getria(1, 0, n, i + 1, n + 1, a[i]);
ans = max(ans, (r - l - 1) * 1ll * a[i] * getb(1, 0, n + 1, l + 1, r - 1));
}
for (int i = 1; i <= n; i++) {
int l = getleb(1, 0, n + 1, 0, i - 1, b[i]);
int r = getrib(1, 0, n + 1, i + 1, n + 1, b[i]);
ans = max(ans, (r - l - 1) * 1ll * b[i] * geta(1, 0, n + 1, l + 1, r - 1));
}
cout << ans;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
332 KB |
Output is correct |
| 2 |
Incorrect |
2 ms |
332 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
332 KB |
Output is correct |
| 2 |
Incorrect |
2 ms |
332 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
