#include <bits/stdc++.h>
#define forr(i, a, b) for (int i = (a); i <= (b); i++)
#define ford(i, a, b) for (int i = (a); i >= (b); i--)
#define forf(i, a, b) for (int i = (a); i < (b); i++)
#define fi first
#define se second
#define pb push_back
#define all(v) v.begin(), v.end()
#define ll long long
#define ld long double
#define pii pair<int, int>
#define pll pair<ll, ll>
#define vi vector<int>
#define vii vector<pii>
#define mask(i) (1LL << (i))
#define bit(x, i) (((x) >> (i)) & 1)
#define bp __builtin_popcountll
#define file "trapezoid"
using namespace std;
const int base = 31;
const ll mod = 1e9 + 7;
const ll oo = 1e18;
const int N = 1e6 + 5;
struct event{
int x, y, type, idx;
bool operator < (const event &other){
if (x == other.x) return y < other.y;
return x < other.x;
}
};
pll st[4 * N];
pll combine(pll a, pll b){
if (!a.fi && !b.fi) return {a.fi, 1};
if (a.fi == b.fi) return {a.fi, a.se + b.se};
return (a.fi < b.fi ? b : a);
}
void build(int id, int l, int r){
st[id] = {0, 1};
if (l == r) return;
int mid = (l + r) >> 1;
build(2 * id, l, mid), build(2 * id + 1, mid + 1, r);
st[id] = combine(st[2 * id], st[2 * id + 1]);
}
void update(int id, int l, int r, int i, pll v){
if (i < l || r < i) return;
if (l == r){
st[id] = combine(st[id], v);
return;
}
int mid = (l + r) >> 1;
update(2 * id, l, mid, i, v), update(2 * id + 1, mid + 1, r, i, v);
st[id] = combine(st[2 * id], st[2 * id + 1]);
}
pll get(int id, int l, int r, int u, int v){
if (v < l || r < u) return {0, 1};
if (u <= l && r <= v) return st[id];
int mid = (l + r) >> 1;
return combine(get(2 * id, l, mid, u, v), get(2 * id + 1, mid + 1, r, u, v));
}
ll dp[N], cnt[N];
int main()
{
ios_base::sync_with_stdio(0);
cin.tie(0);
freopen(file".in", "r", stdin);
freopen(file".out", "w", stdout);
int n;
cin >> n;
vector<event> v;
vector<int> nen;
forr(i, 1, n) {
int a, b, c, d;
cin >> a >> b >> c >> d;
if (a > b) swap(a, b);
if (c > d) swap(c, d);
v.pb({a, c, 0, i});
v.pb({b, d, 1, i});
nen.pb(c);
nen.pb(d);
}
sort(all(nen));
nen.resize(unique(all(nen)) - nen.begin());
forf(i, 0, v.size()) {
v[i].y = lower_bound(all(nen), v[i].y) - nen.begin() + 1;
}
forr(i, 1, n) cnt[i] = 1;
build(1, 1, 2e5);
sort(all(v));
forf(i, 0, v.size()){
if (v[i].type == 0){
pll ans = get(1, 1, 2e5, 1, v[i].y - 1);
int id = v[i].idx;
dp[id] = ans.fi + 1;
cnt[id] = ans.se;
}
else {
int id = v[i].idx;
update(1, 1, 2e5, v[i].y, {dp[id], cnt[id]});
}
}
int res_dp = 0, res_cnt;
forr(i, 1, n) if (res_dp < dp[i]) res_dp = dp[i], res_cnt = cnt[i];
cout << res_dp << " " << res_cnt;
return 0;
}
Compilation message
trapezoid.cpp: In function 'int main()':
trapezoid.cpp:4:43: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<event>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
4 | #define forf(i, a, b) for (int i = (a); i < (b); i++)
| ^
trapezoid.cpp:100:4: note: in expansion of macro 'forf'
100 | forf(i, 0, v.size()) {
| ^~~~
trapezoid.cpp:4:43: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<event>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
4 | #define forf(i, a, b) for (int i = (a); i < (b); i++)
| ^
trapezoid.cpp:109:4: note: in expansion of macro 'forf'
109 | forf(i, 0, v.size()){
| ^~~~
trapezoid.cpp:79:11: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
79 | freopen(file".in", "r", stdin);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
trapezoid.cpp:80:11: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
80 | freopen(file".out", "w", stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
trapezoid.cpp:125:29: warning: 'res_cnt' may be used uninitialized in this function [-Wmaybe-uninitialized]
125 | cout << res_dp << " " << res_cnt;
| ^~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
7 ms |
8540 KB |
Unexpected end of file - int32 expected |
| 2 |
Incorrect |
7 ms |
8540 KB |
Unexpected end of file - int32 expected |
| 3 |
Incorrect |
5 ms |
8628 KB |
Unexpected end of file - int32 expected |
| 4 |
Incorrect |
5 ms |
8540 KB |
Unexpected end of file - int32 expected |
| 5 |
Incorrect |
8 ms |
8536 KB |
Unexpected end of file - int32 expected |
| 6 |
Incorrect |
5 ms |
8540 KB |
Unexpected end of file - int32 expected |
| 7 |
Incorrect |
5 ms |
8540 KB |
Unexpected end of file - int32 expected |
| 8 |
Incorrect |
8 ms |
8540 KB |
Unexpected end of file - int32 expected |
| 9 |
Incorrect |
5 ms |
8536 KB |
Unexpected end of file - int32 expected |
| 10 |
Incorrect |
6 ms |
8540 KB |
Unexpected end of file - int32 expected |
| 11 |
Incorrect |
5 ms |
8540 KB |
Unexpected end of file - int32 expected |
| 12 |
Incorrect |
5 ms |
8540 KB |
Unexpected end of file - int32 expected |
| 13 |
Incorrect |
4 ms |
8540 KB |
Unexpected end of file - int32 expected |
| 14 |
Incorrect |
7 ms |
8540 KB |
Unexpected end of file - int32 expected |
| 15 |
Incorrect |
5 ms |
8540 KB |
Unexpected end of file - int32 expected |
| 16 |
Incorrect |
5 ms |
8540 KB |
Unexpected end of file - int32 expected |
| 17 |
Incorrect |
7 ms |
8540 KB |
Unexpected end of file - int32 expected |
| 18 |
Incorrect |
5 ms |
8540 KB |
Unexpected end of file - int32 expected |
| 19 |
Incorrect |
5 ms |
8540 KB |
Unexpected end of file - int32 expected |
| 20 |
Incorrect |
5 ms |
8756 KB |
Unexpected end of file - int32 expected |
