#include <bits/stdc++.h>
#define MAX 300001
#define INF INT_MAX
#define MOD 1000000007
#define mp make_pair
#define mt make_tuple
#define pb push_back
#define ins insert
#define ff first
#define ss second
#define gett(x,m) get<m>(x)
#define all(a) a.begin(),a.end()
#define lb(a,b) lower_bound(all(a),b)
#define ub(a,b) upper_bound(all(a),b)
#define sortv(a) sort(all(a))
#define sorta(a,sz) sort(a,a+sz)
#define inputar(a,b){\
for(int i=0;i<b;i++){\
cin >> a[i];\
}\
}
#define inputvec(a,b){\
for(int i=0;i<b;i++){\
ll num;\
cin >> num;\
a.pb(num);\
}\
}
#define outputar(a,b){\
for(int i=0;i<b;i++){\
cout << a[i] << " ";\
}\
cout << "\n";\
}
#define outputvec(a){\
for(auto x:a){\
cout << x << " ";\
}\
cout << "\n";\
}
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef tuple<ll,ll,ll> tll;
typedef pair<ll,ll> pll;
typedef double db;
typedef long double ldb;
inline void USACO(string filename){
freopen((filename+".in").c_str(),"r",stdin);
freopen((filename+".out").c_str(),"w",stdout);
}
ll n,q,t=1,m,n2,m2,k,cnt=0,a[MAX],b[MAX],d[MAX],d2[MAX],x,y,z,x2,y2,z2,res1=0,cnt1,cnt2,cnt3;
ll c[1001][1001];
ll c2[1001][1001];
ll fact[MAX];
ll inv_fact[MAX];
//char c;
string str[MAX];
string s1,s2;
const int mod = 998244353;
ll modmul(ll x,ll y,ll md){
if(y==1){
return x;
}
if(y%2){
return (x+modmul(x,y-1,md))%md;
}
else{
return (modmul((x+x)%md,y/2,md))%md;
}
}
ll powmod(ll x,ll y,ll md){
x%=md;
if(x==0){
return 0;
}
ll res=1;
while(y){
if(y%2==1){
res*=x;
res%=md;
}
x*=x;
x%=md;
y/=2;
}
return res;
}
ll pow2(ll x,ll y){
if(x==0){
return 0;
}
ll res=1;
while(y>0){
if(y%2==1){
if(res>=1e18/x){
res=1e18;
}
else{
res*=x;
}
}
if(x>=1e18/x){
x=1e18;
}
else{
x*=x;
}
y/=2;
}
return res;
}
ll inv(ll n,ll md){
return powmod(n,md-2,md);
}
ll nCkm(ll n,ll k,ll md){
if(n-k<0){
return 0;
}
return fact[n]*inv_fact[k]%md*inv_fact[n-k]%md;
}
ll nCk(ll x,ll y){
if(x<y){
return 0;
}
ll res=1;
if(y>x-y){
for(int i=y+1;i<=x;i++){
res*=i;
}
for(int i=2;i<=x-y;i++){
res/=i;
}
}
else{
for(int i=x-y+1;i<=x;i++){
res*=i;
}
for(int i=2;i<=y;i++){
res/=i;
}
}
return res;
}
ll countbits(ll x){
ll cnt=0;
while(x){
cnt+=x&1;
x>>=1;
}
return cnt;
}
ll gcd(ll x,ll y){
if(y==0){
return x;
}
return gcd(y,x%y);
}
ll lcm(ll x,ll y){
return x*y/gcd(x,y);
}
bool alpha(char c1,char c2){
ll h1,h2;
if(c1>='a'){
h1=c1-'a';
}
else{
h1=c1-'A';
}
if(c2>='a'){
h2=c2-'a';
}
else{
h2=c2-'A';
}
if(h1==h2){
return c1<c2;
}
else{
return h1<h2;
}
}
ll dx[4]={1,0,0,-1};
ll dy[4]={0,1,-1,0};
struct custom_hash {
static uint64_t splitmix64(uint64_t x) {
x += 0x9e3779b97f4a7c15;
x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9;
x = (x ^ (x >> 27)) * 0x94d049bb133111eb;
return x ^ (x >> 31);
}
size_t operator()(uint64_t x) const {
static const uint64_t FIXED_RANDOM = chrono::steady_clock::now().time_since_epoch().count();
return splitmix64(x + FIXED_RANDOM);
}
};
struct segtree{
int size;
vector<ll> sums;
void build(vector<int> &a,int x,int lx,int rx){
if(rx-lx==1){
if(lx<(int)a.size()){
sums[x]=a[lx];
}
return;
}
int m=(lx+rx)/2;
build(a,2*x+1,lx,m);
build(a,2*x+2,m,rx);
sums[x]=sums[2*x+1]+sums[2*x+2];
}
void build(vector<int> &a){
build(a,0,0,size);
}
void init(int n){
size=1;
while(size<n){
size*=2;
}
sums.assign(2*size,0LL);
}
ll sum(int l,int r,int x,int lx,int rx){
if(lx>=r || rx<=l){
return 0;
}
if(lx>=l && rx<=r){
return sums[x];
}
ll s1,s2;
int m=(lx+rx)/2;
s1=sum(l,r,2*x+1,lx,m);
s2=sum(l,r,2*x+2,m,rx);
return s1+s2;
}
ll sum(int l,int r){
return sum(l,r,0,0,size);
}
void set(int i,int v,int x,int lx,int rx){
if(rx-lx==1){
sums[x]=v;
return;
}
int m=(lx+rx)/2;
if(i<m){
set(i,v,2*x+1,lx,m);
}
else{
set(i,v,2*x+2,m,rx);
}
sums[x]=sums[2*x+1]+sums[2*x+2];
}
void set(int i,int v){
set(i,v,0,0,size);
}
};
struct dsu{
vector<ll> e;
void init(int n){
e.resize(n+1,-1);
}
int get(int x){
if(e[x]<0){
return x;
}
else{
return e[x]=get(e[x]);
}
}
int size(int x){
return -e[get(x)];
}
bool same_set(int x,int y){
return (get(x)==get(y));
}
bool unite(int x,int y){
x=get(x);
y=get(y);
if(x==y){
return false;
}
if(e[x]>e[y]){
swap(x,y);
}
e[x]+=e[y];
e[y]=x;
return true;
}
};
void solve(){
cin >> n;
for(int i=1;i<=n;i++){
cin >> a[i] >> b[i];
}
set<ll> c;
for(int i=1;i<=n;i++){
c.ins(a[i]);
c.ins(b[i]);
}
map<ll,ll> c2;
ll cnt=1;
for(auto x:c){
c2[x]=cnt;
cnt++;
}
for(int i=1;i<=n;i++){
a[i]=c2[a[i]];
b[i]=c2[b[i]];
}
segtree st,st2;
vector<int> e;
vector<int> e2;
e.resize(2*n+2,0);
e2.resize(2*n+2,0);
st.init(2*n+2);
st2.init(2*n+2);
st.build(e);
st2.build(e2);
ll j=1;
bool ok=false;
for(int i=1;i<=n;i++){
while(j<=n && !ok){
ok=(st.sum(0,a[j]+1)+st2.sum(a[j],b[j]+1)>0);
e[a[j]]++;
e[b[j]+1]--;
e2[a[j]]++;
st.set(a[j],e[a[j]]);
st.set(b[j]+1,e[b[j]+1]);
st2.set(a[j],e2[a[j]]);
j++;
}
if(!ok){
d[i]=INF;
}
else{
d[i]=j-1;
}
e[a[i]]--;
e[b[i]+1]++;
e2[a[i]]--;
st.set(a[i],e[a[i]]);
st.set(b[i]+1,e[b[i]+1]);
st2.set(a[i],e2[a[i]]);
if(st.sum(0,a[i]+1)+st2.sum(a[i],b[i]+1)>0){
ok=false;
}
}
ll h,h1;
h=1;
h1=0;
while(h<n){
h*=2;
h1++;
}
ll sp[n+1][h1+1];
for(int i=1;i<=n;i++){
sp[i][0]=d[i];
}
for(int j=1;j<=h1;j++){
for(int i=1;i<=n;i++){
if(sp[i][j-1]==INF){
sp[i][j]=INF;
}
else{
sp[i][j]=sp[sp[i][j-1]][j-1];
}
}
}
cin >> q;
for(int i=0;i<q;i++){
cin >> x >> y;
ll res=1;
ll h2=h;
for(int j=h1;j>=0;j--){
if(sp[x][j]<=y){
x=sp[x][j];
res+=h2;
}
h2/=2;
}
cout << res << "\n";
}
}
int main(){
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
//USACO("poetry");
//freopen("input.txt","r",stdin);
//cin >> t;
ll cnt1=1;
while(t--){
solve();
cnt1++;
}
}
/*
freopen("input.txt","r",stdin);
freopen("output.txt","w",stdout);
ifstream fin("template.in");
ofstream fout("template.out");
*/
/*
freopen("input.txt","r",stdin);
freopen("output.txt","w",stdout);
ifstream fin("template.in");
ofstream fout("template.out");
*/
/*
ll b[51][51];
b[0][0] = 1;
for (int n = 1; n <= 50; ++n){
b[n][0] = b[n][n] = 1;
for (int k = 1; k < n; ++k)
b[n][k] = b[n - 1][k - 1] + b[n - 1][k];
}
*/
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Execution timed out |
1088 ms |
91004 KB |
Time limit exceeded |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
20 ms |
12116 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
20 ms |
12116 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Execution timed out |
1071 ms |
77388 KB |
Time limit exceeded |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Execution timed out |
1088 ms |
91004 KB |
Time limit exceeded |
| 2 |
Halted |
0 ms |
0 KB |
- |
