# | Time | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
885624 | serifefedartar | trapezoid (balkan11_trapezoid) | C++17 | 156 ms | 42560 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
using namespace std;
#define fast ios::sync_with_stdio(0);cin.tie(0);
#define s second
#define f first
typedef long long ll;
const ll MOD = 30013;
const ll LOGN = 21;
const ll MAXN = 4e5 + 100;
struct T {
int a, b, c, d;
void read() {
cin >> a >> b >> c >> d;
}
T() { }
};
vector<T> trap;
vector<int> cc, in[MAXN], out[MAXN], x[MAXN];
int fen[MAXN], dp[MAXN], ways[MAXN];
void add(int k, int val) {
while (k < MAXN) {
fen[k] = max(fen[k], val);
k += k & -k;
}
}
int query(int k) {
int mx = 0;
while (k) {
mx = max(mx, fen[k]);
k -= k & -k;
}
return mx;
}
void addS(int k, int val) {
while (k < MAXN) {
fen[k] += val;
fen[k] %= MOD;
k += k & -k;
}
}
void setS(int k, int val) {
while (k < MAXN) {
fen[k] = val;
k += k & -k;
}
}
int queryS(int k) {
int sum = 0;
while (k) {
sum += fen[k];
sum %= MOD;
k -= k & -k;
}
return sum;
}
int main() {
fast
int N;
cin >> N;
trap = vector<T>(N);
for (int i = 0; i < N; i++) {
trap[i].read();
cc.push_back(trap[i].a);
cc.push_back(trap[i].b);
cc.push_back(trap[i].c);
cc.push_back(trap[i].d);
}
sort(cc.begin(), cc.end());
cc.erase(unique(cc.begin(), cc.end()), cc.end());
for (auto &u : trap) {
u.a = upper_bound(cc.begin(), cc.end(), u.a) - cc.begin();
u.b = upper_bound(cc.begin(), cc.end(), u.b) - cc.begin();
u.c = upper_bound(cc.begin(), cc.end(), u.c) - cc.begin();
u.d = upper_bound(cc.begin(), cc.end(), u.d) - cc.begin();
}
for (int i = 0; i < N; i++) {
in[trap[i].a].push_back(i);
out[trap[i].b].push_back(i);
}
int mx = 0;
for (int i = 1; i < MAXN; i++) {
for (auto u : out[i])
add(trap[u].d, dp[u]);
for (auto u : in[i]) {
int Q = query(trap[u].c);
dp[u] = Q + 1;
mx = max(mx, dp[u]);
}
}
for (int i = 0; i < N; i++) {
x[dp[i]].push_back(i);
}
memset(fen, 0, sizeof(fen));
for (int i = 0; i < MAXN; i++)
in[i].clear(), out[i].clear();
for (auto u : x[1])
ways[u] = 1;
int ans = x[1].size();
for (int i = 2; i <= mx; i++) {
int sum = 0;
vector<pair<int,int>> v;
for (auto u : x[i-1])
v.push_back({trap[u].b, u});
for (auto u : x[i])
v.push_back({trap[u].a, u});
sort(v.begin(), v.end());
for (auto u : v) {
if (dp[u.s] == i) {
ways[u.s] = queryS(trap[u.s].c);
sum += ways[u.s];
sum %= MOD;
} else
addS(trap[u.s].d, ways[u.s]);
}
ans = sum;
for (auto u : v)
setS(trap[u.s].d, 0);
}
cout << mx << " " << ans << "\n";
}
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
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