#include <bits/stdc++.h>
#define fi first
#define se second
using namespace std;
typedef pair<int, int> pii;
typedef long long ll;
int M, N, P;
array<int, 5> arr[404040];
ll B;
struct segtree {
int tree[1<<21], lazy[1<<21];
void prop(int v, int st, int ed) {
tree[v] += lazy[v];
if (st != ed) {
lazy[2*v] += lazy[v];
lazy[2*v+1] += lazy[v];
}
lazy[v] = 0;
}
void update(int v, int st, int ed, int lt, int rt, int val) {
prop(v, st, ed);
if (lt > ed || st > rt) return;
if (lt <= st && ed <= rt) {
lazy[v] = val;
prop(v, st, ed);
return;
}
int mid = (st+ed)/2;
update(2*v, st, mid, lt, rt, val);
update(2*v+1, mid+1, ed, lt, rt, val);
tree[v] = min(tree[2*v], tree[2*v+1]);
}
int get(int v, int st, int ed, int lt, int rt) {
prop(v, st, ed);
if (lt > ed || st > rt) return 1e9;
if (lt <= st && ed <= rt) return tree[v];
int mid = (st+ed)/2;
return min(get(2*v, st, mid, lt, rt), get(2*v+1, mid+1, ed, lt, rt));
}
} seg;
vector<pii> add[1010101], rem[1010101];
bool solve(int L) {
for (int i = 0; i <= M-L; i++) add[i].clear();
for (int i = 0; i <= M-L; i++) rem[i].clear();
for (int i = 0; i < (1<<21); i++) seg.tree[i] = seg.lazy[i] = 0;
for (int i = 1; i <= P; i++) {
if (arr[i][0]-L < 0) seg.update(1, 0, N-L, arr[i][1]-L, arr[i][3]-1, +1);
else add[arr[i][0]-L].push_back({arr[i][1]-L, arr[i][3]-1});
rem[arr[i][2]].push_back({arr[i][1]-L, arr[i][3]-1});
}
for (int i = 0; i <= M-L; i++) {
for (auto &[l, r] : add[i]) seg.update(1, 0, N-L, l, r, +1);
for (auto &[l, r] : rem[i]) seg.update(1, 0, N-L, l, r, -1);
if (seg.get(1, 0, N-L, 0, N-L) == 0) return true;
}
return false;
}
int main() {
ios_base::sync_with_stdio(false);
cin.tie(0);
cin >> M >> N;
cin >> B >> P;
for (int i = 1; i <= P; i++) {
cin >> arr[i][0] >> arr[i][1] >> arr[i][2] >> arr[i][3] >> arr[i][4];
}
int st = 0, ed = min(M, N);
while (st < ed) {
int mid = (st+ed+1)/2;
if (solve(mid)) st = mid;
else ed = mid-1;
}
cout << st << "\n";
return 0;
}
Compilation message
pyramid_base.cpp: In function 'bool solve(int)':
pyramid_base.cpp:57:20: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
57 | for (auto &[l, r] : add[i]) seg.update(1, 0, N-L, l, r, +1);
| ^
pyramid_base.cpp:58:20: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
58 | for (auto &[l, r] : rem[i]) seg.update(1, 0, N-L, l, r, -1);
| ^
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
18 ms |
66136 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
16 ms |
66140 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
20 ms |
66140 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
26 ms |
66392 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
47 ms |
66452 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
61 ms |
66576 KB |
Output is correct |
2 |
Correct |
208 ms |
66688 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
212 ms |
66644 KB |
Output is correct |
2 |
Correct |
81 ms |
66392 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
59 ms |
66640 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
231 ms |
69848 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
799 ms |
76676 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
785 ms |
78676 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
1004 ms |
80720 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
4427 ms |
105936 KB |
Output is correct |
2 |
Correct |
781 ms |
99668 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Execution timed out |
5029 ms |
111636 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Execution timed out |
5061 ms |
116192 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |