#include <bits/stdc++.h>
using namespace std;
int j,b[100005][20],x,y,c[100005][20],i,n,q,dr[100005],pu[20],l2[100005];
pair<int,int> a[100005];
stack<int> s;
signed main()
{
ios_base::sync_with_stdio(0);
cin.tie(0);
cin>>n>>q;
for(i=1;i<=n;i++)
{
if(i>1)l2[i]=l2[i>>1]+1;
//dr[i]=n+1;
cin>>a[i].first>>a[i].second;
while(!s.empty()&&a[i].first>a[s.top()].first)
{
dr[s.top()]=i;
s.pop();
}
s.push(i);
}
pu[0]=1;
for(i=1;i<=20;i++)
pu[i]=pu[i-1]<<1;
for(i=1;i<=n;i++)
{
b[i][0]=dr[i];
c[i][0]=a[dr[i]].second;
}
for(j=1;j<=l2[n];j++)
for(i=1;i<=n;i++)
{
b[i][j]=b[b[i][j-1]][j-1];
c[i][j]=c[i][j-1]+c[b[i][j-1]][j-1];
}
while(q--)
{
cin>>x>>y;
if(a[x].second>=y)
{
cout<<x<<'\n';
continue;
}
y-=a[x].second;
int k=x;
for(i=l2[n-x+1];i>=0;i--)
if(b[k][i]&&c[k][i]<=y)
{
//y-=c[k][i];
k=b[k][i];
}
cout<<dr[k]<<'\n';
}
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
1 ms |
332 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
255 ms |
20224 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
1 ms |
332 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |