#include<bits/stdc++.h>
#define ll long long
#define vi vector<int>
#define pii pair<int,int>
#define all(x) x.begin(),x.end()
#define fi first
#define se second
#define pb push_back
using namespace std;
const int N = 1e6+6,inf = 1e8;
int F[N],ANS[N];
vector<pii> Q[N*4];
void qer(int v,int tl,int tr,int l,int r,int QL,int QR) {
if (l > tr || r < tl) return;
if (l <= tl && r >= tr) {
Q[v].pb({QL,QR});
return;
}
int tm = (tl + tr)/2;
qer(v*2,tl,tm,l,r,QL,QR);
qer(v*2+1,tm+1,tr,l,r,QL,QR);
}
int cans=INT_MAX;
int t[2][4*N],timer;
int *H[61000000];
int val[61000000];
void change(int&x,int c) {
++timer;
H[timer] = &x;
val[timer] = x;
x = c;
}
void rollback() {
(*H[timer]) = val[timer];
timer--;
}
bool type;
int VAL,pos,L,R;
void add(int v,int tl,int tr) {
if (tl == tr) {
if (type == 0)
change(t[0][v],min(t[0][v],VAL));
else change(t[1][v],max(t[1][v],VAL));
return;
}
int tm = (tl + tr)/2;
if (pos <= tm) {
add(v*2,tl,tm);
}
else add(v*2+1,tm+1,tr);
if (type == 0)
change(t[0][v],min(t[0][v*2],t[0][v*2+1]));
else
change(t[1][v],max(t[1][v*2],t[1][v*2+1]));
}
int get(int v,int tl,int tr) {
if (L> tr || R < tl) {
if (type == 0) return inf;
else return -inf;
}
if (L <= tl && R >= tr) return t[type][v];
int tm = (tl + tr)/2;
if (type == 0)
return min(get(v*2,tl,tm),get(v*2+1,tm+1,tr));
else return max(get(v*2,tl,tm),get(v*2+1,tm+1,tr));
}
int L1=-inf,R1=inf,AR1[N],AL1[N],HANS=inf;
void dfs(int v,int tl,int tr) {
int in_ans = cans;
int start_time = timer;
for (auto i1 : Q[v]) {
int l = i1.fi;
int r = i1.se;
change(R1,min(R1,r));
change(L1,max(L1,L));
change(AR1[l],min(AR1[l],r));
change(AL1[r],max(AL1[r],l));
type = 0;
L = r;
R = 1e6;
type = 0;
{
int l2 = L1;
int r2 = R1;
int len = max(0,r2 - l2);
if (len) {
int l3 = l2, r3 = r2;
r = AR1[l3];
l = AL1[r3];
change(HANS,r3-l3);
pos = l;
VAL = r;
type = 0;
add(1,1,1e6); // l-ze patara r-ebshi udidesi l, r-ze did l-ebshi umciresi r
pos = r;
VAL = l;
type = 1;
add(1,1,1e6);
// ANS[i] = r2-l2;
//F[i] = 1;
continue;
}
}
if (cans > r - l)
cans = min(cans, -l + get(1,1,1e6));
L = 1;
R = l;type = 1;
if (cans > r - l)
cans = min(cans, r - get(1,1,1e6));
pos = l;
VAL = r;
type = 0;
add(1,1,1e6); // l-ze patara r-ebshi udidesi l, r-ze did l-ebshi umciresi r
pos = r;
VAL = l;
type = 1;
add(1,1,1e6);
}
if (tl != tr) {
int tm = (tl + tr)/2;
dfs(v*2,tl,tm);
dfs(v*2+1,tm+1,tr);
}else {
if (F[tl]) {
if (cans == inf)
ANS[tl] = HANS;
else
ANS[tl] = cans;
}
}
while(start_time != timer) {
rollback();
}
cans = in_ans;
}
main() {
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
int q;
cin >> q;
multiset<int> L,R;
multiset<int> AL[1000004],AR[1000004];
for (int i = 0; i < N; i++)
AR1[i] = inf,AL1[i] = -inf;
for (int i = 0; i < 4*N;i ++)
t[0][i] = inf, t[1][i] = -inf;
vector<pair<pii,char> > query(q+1);
vector<pii> t(q);
for (int i = 1; i <= q; i++) {
char c;
int l,r;
cin >> c >> l >> r;
query[i] = {{l,r},c};
t[i-1] = {l,r};
}
sort(all(t));
t.resize(unique(all(t)) - t.begin());
map<pii,int> ID;
for (int i = 0; i < t.size(); i++) {
ID[t[i]] = i;
}
set<int> cnt[1000005];
for (int i = 1; i <= q; i++) {
char c= query[i].se;
int l = query[i].fi.fi;
int r = query[i].fi.se;
int id = ID[{l,r}];
if (c == 'A') {
cnt[id].insert(i);
/* L.insert(l);
R.insert(r);
AR[l].insert(r);
AL[r].insert(l);*/
}else {
qer(1,1,q,*cnt[id].begin(),i-1,l,r);
cnt[id].erase(cnt[id].begin());
/* AL[r].erase(AL[r].find(l));
AR[l].erase(AR[l].find(r));
L.erase(L.find(l));
R.erase(R.find(r));*/
/* l = *L.rbegin();
r = *R.begin();
int len = max(0,r - l);
if (len) {
int l1 = l, r1 = r;
r = *AR[l1].begin();
l = *AL[r1].rbegin();
ANS[i] = r-l;*/
F[i] = 1;
}
F[i] = 1;
}
for (int i= 0; i < t.size(); i++)
for (int j : cnt[i])
qer(1,1,q,j,q,t[i].fi,t[i].se);
dfs(1,1,q);
for (int i = 1; i <= q; i++)
cout << ANS[i] <<'\n';
}
Compilation message
Main.cpp:140:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
140 | main() {
| ^
Main.cpp: In function 'int main()':
Main.cpp:165:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
165 | for (int i = 0; i < t.size(); i++) {
| ~~^~~~~~~~~~
Main.cpp:199:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
199 | for (int i= 0; i < t.size(); i++)
| ~~^~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
188 ms |
274552 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
188 ms |
274552 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
188 ms |
274552 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
2625 ms |
430932 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
188 ms |
274552 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
