//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
//#pragma GCC optimize("Ofast,unroll-loops,fast-math,O3")
#include<bits/stdc++.h>
using namespace std;
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
#define sz(a) (int)a.size()
#define pf push_front
#define pb push_back
#define vt vector
#define s second
#define f first
#define nl '\n'
using ll = long long;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
vt<pii> rid = {{0, 1}, {0, -1}, {1, 0}, {-1, 0}};
vt<pii> dir = {{-1, -1}, {-1, 1}, {1, -1}, {1, 1}};
const int N = 1111, mod = 998244353;
const ll inf = 1e9;
double eps = 1e-15;
bool fl = 0;
int n, m, k;
int a[N][N];
int can(int x) {
int b[n + 1][m + 1];
for (int i = 1; i <= n; i++) {
for (int j = 1; j <= m; j++) {
b[i][j] = (a[i][j] >= x);
}
}
int d[n + 1][m + 2];
for (int j = 1; j <= m; j++) {
d[0][j] = 0;
for (int i = 1; i <= n; i++) {
d[i][j] = d[i - 1][j];
if (!b[i][j]) d[i][j] = i;
}
}
int tl[n + 1][m + 1];
int tr[n + 1][m + 1];
for (int i = 1; i <= n; i++) {
stack<int> s;
d[i][0] = inf;
s.push(0);
for (int j = 1; j <= m; j++) {
while (d[i][s.top()] <= d[i][j]) s.pop();
tl[i][j] = s.top() + 1;
s.push(j);
}
while (!s.empty()) s.pop();
d[i][m + 1] = inf;
s.push(m + 1);
for (int j = m; j >= 1; j--) {
while (d[i][s.top()] <= d[i][j]) s.pop();
tr[i][j] = s.top() - 1;
s.push(j);
}
}
int ans = 0;
for (int i = 1; i <= n; i++) {
for (int j = 1; j <= m; j++) {
ans = max(ans, (tr[i][j] - tl[i][j] + 1) * (i - d[i][j]));
}
}
return ans;
}
void slv() {
cin >> n >> m >> k;
for (int i = 1; i <= n; i++) {
for (int j = 1; j <= m; j++) {
cin >> a[i][j];
}
}
int l = 1, r = inf, vl;
while (l <= r) {
int m = (l + r) / 2;
int v = can(m);
if (v >= k) {
l = m + 1;
vl = v;
}else r = m - 1;
}
cout << l - 1 << ' ' << vl << nl;
}
main() {
//freopen("shops.in", "r", stdin);
//freopen("shops.out", "w", stdout);
ios_base::sync_with_stdio(0);
cin.tie(0);
int tp = 1;
if (fl) cin >> tp;
while (tp--) {
slv();
}
}
Compilation message
burrow.cpp:101:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
101 | main() {
| ^~~~
burrow.cpp: In function 'void slv()':
burrow.cpp:16:12: warning: 'vl' may be used uninitialized in this function [-Wmaybe-uninitialized]
16 | #define nl '\n'
| ^~~~
burrow.cpp:89:22: note: 'vl' was declared here
89 | int l = 1, r = inf, vl;
| ^~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
340 KB |
Output is correct |
| 2 |
Correct |
1 ms |
340 KB |
Output is correct |
| 3 |
Correct |
0 ms |
340 KB |
Output is correct |
| 4 |
Correct |
1 ms |
340 KB |
Output is correct |
| 5 |
Correct |
1 ms |
340 KB |
Output is correct |
| 6 |
Correct |
1 ms |
468 KB |
Output is correct |
| 7 |
Correct |
1 ms |
340 KB |
Output is correct |
| 8 |
Correct |
6 ms |
928 KB |
Output is correct |
| 9 |
Correct |
12 ms |
1492 KB |
Output is correct |
| 10 |
Correct |
27 ms |
1748 KB |
Output is correct |
| 11 |
Correct |
47 ms |
2388 KB |
Output is correct |
| 12 |
Correct |
33 ms |
3296 KB |
Output is correct |
| 13 |
Correct |
35 ms |
1492 KB |
Output is correct |
| 14 |
Correct |
89 ms |
4684 KB |
Output is correct |
| 15 |
Correct |
91 ms |
4572 KB |
Output is correct |
| 16 |
Correct |
95 ms |
4564 KB |
Output is correct |
| 17 |
Correct |
113 ms |
6416 KB |
Output is correct |
| 18 |
Correct |
247 ms |
8552 KB |
Output is correct |
| 19 |
Correct |
300 ms |
10964 KB |
Output is correct |
| 20 |
Correct |
533 ms |
13840 KB |
Output is correct |
| 21 |
Correct |
629 ms |
16972 KB |
Output is correct |
| 22 |
Correct |
894 ms |
20560 KB |
Output is correct |
| 23 |
Correct |
972 ms |
20284 KB |
Output is correct |
| 24 |
Correct |
543 ms |
16216 KB |
Output is correct |
| 25 |
Correct |
794 ms |
20316 KB |
Output is correct |
