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 <iostream>
#include <fstream>
#include <set>
#include <map>
#include <string>
#include <vector>
#include <bitset>
#include <algorithm>
#include <cstring>
#include <cstdlib>
#include <cmath>
#include <cassert>
#include <queue>
#define mp make_pair
#define pb push_back
typedef long long ll;
typedef long double ld;
#define f first
#define s second
using namespace std;
const int N = 1e5 + 123;
int q, n, id, l[N], r[N];
bool used[N];
vector < pair < int, pair < int, int > > > lazy;
vector < int > L[265000], R[265000];
vector < pair < int, int > > segments;
void build(int v = 1, int tl = 0, int tr = n - 1) {
if (tl > tr) return;
if (tl == tr) {
L[v].clear();
R[v].clear();
if (tl < segments.size()) {
L[v].push_back(segments[tl].first);
R[v].push_back(segments[tl].second);
}
return;
}
int tm = (tl + tr) / 2;
build(v * 2, tl, tm);
build(v * 2 + 1, tm + 1, tr);
L[v].resize(L[v * 2].size() + L[v * 2 + 1].size());
R[v].resize(R[v * 2].size() + R[v * 2 + 1].size());
merge(L[v * 2].begin(), L[v * 2].end(), L[v * 2 + 1].begin(), L[v * 2 + 1].end(), L[v].begin());
merge(R[v * 2].begin(), R[v * 2].end(), R[v * 2 + 1].begin(), R[v * 2 + 1].end(), R[v].begin());
}
int getId(int k) {
int ans = -1, l = 0, r = segments.size() - 1;
while(l <= r) {
int mid = (l + r) / 2;
int len = segments[mid].second - segments[mid].first + 1;
if (len >= k) {
ans = mid;
l = mid + 1;
} else {
r = mid - 1;
}
}
return ans;
}
int get(int l, int r, int A, int B, int k, int v = 1, int tl = 0, int tr = n - 1) {
if (tl > r || tr < l || l > r || tl > tr) return 0;
if (l <= tl && tr <= r) {
int res = (lower_bound(R[v].begin(), R[v].end(), A + k - 1) - R[v].begin())
+ (L[v].end() - upper_bound(L[v].begin(), L[v].end(), B - k + 1));
return res;
}
int tm = (tl + tr) / 2;
int ans = get(l, r, A, B, k, v * 2, tl, tm) + get(l, r, A, B, k, v * 2 + 1, tm + 1, tr);
return ans;
}
int inter(int l1, int r1, int l2, int r2) {
return max(0, min(r1, r2) - max(l1, l2) + 1);
}
int query(int A, int B, int k) {
if (B - A + 1 < k) return 0;
int id = getId(k);
int ans = id + 1 - get(0, id, A, B, k);
for (auto i : lazy) {
if (inter(i.second.first, i.second.second, A, B) >= k) {
if (i.first == 1) ans++;
else ans--;
}
}
return ans;
}
bool cmp(pair < int, int > a, pair < int, int > b) {
return a.second - a.first + 1 > b.second - b.first + 1;
}
void rebuild() {
segments.clear();
lazy.clear();
for (int i = 1;i <= id;i++) {
if (!used[i]) {
segments.pb({l[i], r[i]});
}
}
sort(segments.begin(), segments.end(), &cmp);
n = 1;
while(n < segments.size()) n *= 2;
build();
}
int main() {
// freopen("input", "r", stdin);
// freopen("output", "w", stdout);
int G;
scanf("%d%d", &q, &G);
int K = sqrt(q * 19);
int lst_ans = 0;
//cout << q << " " << K << endl;
for (int i = 0, t, x, was = 0;i < q;i++) {
if (i % K == 0) {
// cout << "starting\n";
rebuild();
// cout << "Succesfully i = " << i / K << endl;
}
scanf("%d", &t);
if (t == 1) {
id++;
scanf("%d%d", &l[id], &r[id]);
l[id] = l[id] ^ (G * lst_ans);
r[id] = r[id] ^ (G * lst_ans);
if (l[id] > r[id]) swap(l[id], r[id]);
lazy.push_back({1, {l[id], r[id]}});
}
if (t == 2) {
scanf("%d", &x);
used[x] = 1;
lazy.push_back({2, {l[x], r[x]}});
}
if (t == 3) {
int a, b, k;
scanf("%d%d%d", &a, &b, &k);
a = a ^ (G * lst_ans);
b = b ^ (G * lst_ans);
if (a > b) swap(a, b);
printf("%d\n", lst_ans = query(a, b, k));
}
}
return 0;
}
Compilation message (stderr)
segments.cpp: In function 'void build(int, int, int)':
segments.cpp:43:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
if (tl < segments.size()) {
~~~^~~~~~~~~~~~~~~~~
segments.cpp: In function 'void rebuild()':
segments.cpp:116:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
while(n < segments.size()) n *= 2;
~~^~~~~~~~~~~~~~~~~
segments.cpp: In function 'int main()':
segments.cpp:128:25: warning: unused variable 'was' [-Wunused-variable]
for (int i = 0, t, x, was = 0;i < q;i++) {
^~~
segments.cpp:124:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d", &q, &G);
~~~~~^~~~~~~~~~~~~~~~
segments.cpp:134:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d", &t);
~~~~~^~~~~~~~~~
segments.cpp:137:12: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d", &l[id], &r[id]);
~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
segments.cpp:144:11: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d", &x);
~~~~~^~~~~~~~~~
segments.cpp:150:12: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d%d", &a, &b, &k);
~~~~~^~~~~~~~~~~~~~~~~~~~~~
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