/*
In the name of Allah
made by: Ahmed_Solyman
*/
#include <bits/stdc++.h>
#include <ext/rope>
using namespace std;
using namespace __gnu_cxx;
#pragma GCC optimize("-Ofast")
#pragma GCC optimize("-O1")
//-------------------------------------------------------------//
typedef long long ll;
typedef unsigned long long ull;
#define fast ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define PI acos(-1)
#define lb lower_bound
#define ub upper_bound
#define endl '\n'
#define all(v) v.begin(),v.end()
#define allr(v) v.rbegin(),v.rend()
#define sum_to(n) (n*(n+1))/2
#define pb push_back
#define pf push_front
#define fil(arr,x) memset(arr,x,sizeof(arr))
const ll mod=1e9+7;
int dx[8]={0,1,0,-1,1,1,-1,-1};
int dy[8]={1,0,-1,0,1,-1,-1,1};
//-------------------------------------------------------------//
ll lcm(ll a,ll b)
{
return (max(a,b)/__gcd(a,b))*min(a,b);
}
void person_bool(bool x)
{
cout<<(x?"YES":"NO")<<endl;
}
const int N=2e5+5;
int l[N],r[N],dp[N][21],Log[N],l2[N],r2[N];
int main()
{
//freopen("input.txt","r",stdin);
//freopen("output.txt","w",stdout);
#ifndef ONLINE_JUDGE
freopen("input.in", "r", stdin);
freopen("output.out", "w", stdout);
#endif
fast
Log[1]=0;
for(int i=2;i<N;i++)Log[i]=Log[i/2]+1;
int n;cin>>n;
set<int>s;
for(int i=1;i<=n;i++){
cin>>l[i]>>r[i];
s.insert(l[i]);
s.insert(r[i]);
l2[i]=l[i];
r2[i]=r[i];
}
int cnt=0;
map<int,int>mp;
for(auto i:s){
mp[i]=cnt++;
}
for(int i=1;i<=n;i++){
l[i]=mp[l2[i]];
r[i]=mp[r2[i]];
}
dp[n+1][0]=n+1;
for(int j=1;j<=20;j++){
dp[n+1][j]=n+1;
for(int i=1;i<=n;i++){
dp[i][j]=dp[dp[i][j-1]][j-1];
}
}
int q;cin>>q;
while(q--){
int a,b;cin>>a>>b;
if(a==b){
cout<<1<<endl;
continue;
}
int ans=1;
for(int j=20;j>=0;j--){
if(dp[a][j]<=b){
a=dp[a][j];
ans+=1<<j;
}
}
cout<<ans<<endl;
}
return 0;
}
Compilation message
Main.cpp: In function 'int main()':
Main.cpp:45:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
45 | freopen("input.in", "r", stdin);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:46:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
46 | freopen("output.out", "w", stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
6 ms |
9052 KB |
Execution killed with signal 11 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
6 ms |
8884 KB |
Execution killed with signal 11 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
6 ms |
8884 KB |
Execution killed with signal 11 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
6 ms |
8940 KB |
Execution killed with signal 11 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
6 ms |
9052 KB |
Execution killed with signal 11 |
| 2 |
Halted |
0 ms |
0 KB |
- |
