#include <bits/stdc++.h>
using namespace std;
using pii = pair<int, int>;
using piipii = pair<pii, pii>;
using pipii = pair<int, pii>;
#define all(x) x.begin(), x.end()
#define mp make_pair
#define F first
#define S second
inline pii comb(pii a, pii b) {
if (a.F == b.F)
return pii(a.F, (a.S+b.S)%30013);
else
return max(a, b);
}
const int N = 1<<17;
int n;
piipii A[N];
struct data {
vector<int> key;
vector<pii> val;
data() {
key.clear();
val.clear();
}
data(int x) {
key.push_back(x);
val = vector<pii>(2, pii(0, 0));
}
data operator+(data b) {
data ret;
merge(all(key), all(b.key), back_inserter(ret.key));
ret.val.resize(val.size()+b.val.size()-1, pii(0, 0));
return ret;
}
} seg[N<<1];
vector<pii> coord;
void build(int p=1, int b=0, int e=n-1) {
if (b == e) {
seg[p] = data(A[coord[b].S].F.S);
return;
}
int m = (b+e)/2;
build(p<<1, b, m);
build(p<<1|1, m+1, e);
seg[p] = seg[p<<1]+seg[p<<1|1];
}
pii query(int x, int y, int p=1, int b=0, int e=n-1) {
int l = x, r = n-1;
if (b > r || e < l)
return pii(0, 0);
if (b >= l && e <= r) {
int i = lower_bound(all(seg[p].key), y)-seg[p].key.begin()+1;
pii ans(0, 0);
for (; i <= seg[p].key.size(); i += i&-i)
ans = comb(ans, seg[p].val[i]);
return ans;
}
int m = (b+e)/2;
pii q1 = query(x, y, p<<1, b, m);
pii q2 = query(x, y, p<<1|1, m+1, e);
return comb(q1, q2);
}
inline void updateft(int p, int i, pii v) {
for (; i > 0; i -= i&-i)
seg[p].val[i] = comb(seg[p].val[i], v);
}
void update(int x, int y, pii v, int p=1, int b=0, int e=n-1) {
if (b > x || e < x)
return;
updateft(p, lower_bound(all(seg[p].key), y)-seg[p].key.begin()+1, v);
if (b == e)
return;
int m = (b+e)/2;
if (x <= m)
update(x, y, v, p<<1, b, m);
else
update(x, y, v, p<<1|1, m+1, e);
}
int pos(int x) {
return lower_bound(all(coord), pii(x, 0))-coord.begin();
}
int main()
{
scanf("%d", &n);
for (int i = 0; i < n; ++i)
scanf("%d%d%d%d", &A[i].F.F, &A[i].S.F, &A[i].F.S, &A[i].S.S);
sort(A, A+n);
for (int i = 0; i < n; ++i)
coord.push_back(pii(A[i].F.F, i));
sort(coord.begin(), coord.end());
build();
pii ans(0, 0);
for (int i = n-1; i >= 0; --i) {
int ul = A[i].F.F, dl = A[i].F.S;
int ur = A[i].S.F, dr = A[i].S.S;
pii best = query(pos(ur), dr);
++best.F;
if (best.S == 0)
best.S = 1;
ans = comb(ans, best);
update(pos(ul), dl, best);
//printf("ul=%d, dl=%d, update to %d %d\n", ul, dl, best.F, best.S);
}
printf("%d %d\n", ans.F, ans.S);
return 0;
}
Compilation message
trapezoid.cpp: In function 'pii query(int, int, int, int, int)':
trapezoid.cpp:61:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (; i <= seg[p].key.size(); i += i&-i)
~~^~~~~~~~~~~~~~~~~~~~
trapezoid.cpp: In function 'int main()':
trapezoid.cpp:95:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d", &n);
~~~~~^~~~~~~~~~
trapezoid.cpp:97:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d%d%d", &A[i].F.F, &A[i].S.F, &A[i].F.S, &A[i].S.S);
~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
17 ms |
12664 KB |
Output is correct |
| 2 |
Correct |
13 ms |
12740 KB |
Output is correct |
| 3 |
Correct |
14 ms |
12872 KB |
Output is correct |
| 4 |
Correct |
15 ms |
13128 KB |
Output is correct |
| 5 |
Correct |
18 ms |
13244 KB |
Output is correct |
| 6 |
Correct |
28 ms |
13660 KB |
Output is correct |
| 7 |
Correct |
23 ms |
13828 KB |
Output is correct |
| 8 |
Correct |
35 ms |
14336 KB |
Output is correct |
| 9 |
Correct |
56 ms |
16032 KB |
Output is correct |
| 10 |
Correct |
89 ms |
19488 KB |
Output is correct |
| 11 |
Correct |
112 ms |
20964 KB |
Output is correct |
| 12 |
Correct |
285 ms |
29660 KB |
Output is correct |
| 13 |
Correct |
315 ms |
32484 KB |
Output is correct |
| 14 |
Correct |
373 ms |
37976 KB |
Output is correct |
| 15 |
Correct |
459 ms |
39780 KB |
Output is correct |
| 16 |
Correct |
469 ms |
41452 KB |
Output is correct |
| 17 |
Correct |
474 ms |
42988 KB |
Output is correct |
| 18 |
Correct |
401 ms |
44528 KB |
Output is correct |
| 19 |
Partially correct |
497 ms |
46112 KB |
Partially correct |
| 20 |
Execution timed out |
557 ms |
47596 KB |
Time limit exceeded |
