#include<bits/stdc++.h>
#define pii pair<int,int>
#define ll long long
using namespace std;
const int inf=1e9+10;
const int mxn=3e5+10;
struct nod
{
nod *left,*right;
int val;
nod(int v=-1,nod *l=NULL,nod *r=NULL):val(v),left(l),right(r){};
void update(int b,int e,int pos,int v)
{
if(b>pos||e<pos)return;
if(b==e)
{
val=max(val,v);
return;
}
int mid=b+e>>1;
if(b<=pos && pos<=mid)
{
if(left==NULL)left=new nod();
left->update(b,mid,pos,v);
val=max(val,left->val);
}
else
{
if(right==NULL)right=new nod();
right->update(mid+1,e,pos,v);
val=max(val,right->val);
}
}
int query(int b,int e,int l,int r)
{
if(b>r||e<l)return -1;
if(b>=l&&e<=r)
{
return val;
}
int mid=b+e>>1;
if(left==NULL && right==NULL)return -1;
if(left==NULL)return right->query(mid+1,e,l,r);
else if(right==NULL) return left->query(b,mid,l,r);
return max(left->query(b,mid,l,r),right->query(mid+1,e,l,r));
}
}*root[4*mxn];
int query(int node,int b,int e,int t1,int t2,int l,int r)
{
if(b>t2||e<t1)return 0;
if(root[node]==NULL)return 0;
if(b>=t1 && e<=t2)
{
return root[node]->query(1,mxn,l,r);
}
int mid=b+e>>1;
int lf=node<<1;
int rf=lf|1;
int k=root[node]->query(1,mxn,l,r);
if(k==0)return 0;
else if(k==(e-b+1))return min(t2,e)-max(t1,b)+1;
return query(lf,b,mid,t1,t2,l,r)+query(rf,mid+1,e,t1,t2,l,r);
}
void update(int node,int b,int e,int l,int r,int pos)
{
if(b>r||e<l)return;
if(root[node]==NULL)root[node]=new nod();
if(b>=l&&e<=r)
{
root[node]->update(1,mxn,pos,(e-b+1));
return;
}
root[node]->update(1,mxn,pos,min(r,e)-max(b,l)+1);
int mid=b+e>>1;
int left=node<<1;
int right=left|1;
update(left,b,mid,l,r,pos);
update(right,mid+1,e,l,r,pos);
}
int tree[4*mxn];
int qr2(int node,int b,int e,int l,int r)
{
if(b>r||e<l)return inf;
if(b>=l&&e<=r)return tree[node];
int m=b+e>>1;
int lf=node<<1;
int rf=lf|1;
return min(qr2(lf,b,m,l,r),qr2(rf,m+1,e,l,r));
}
void upd(int node, int b,int e,int pos,int val)
{
if(b>pos||e<pos)return;
if(b==e)
{
tree[node]=val;
return;
}
int m=b+e>>1;
int l=node<<1;
int r=l|1;
upd(l,b,m,pos,val);
upd(r,m+1,e,pos,val);
tree[node]=min(tree[l],tree[r]);
}
int main()
{
for(int i=0;i<4*mxn;i++)tree[i]=inf;
int n,q;
cin>>n>>q;
int a[n+1];
string s;
cin>>s;
for(int i=0;i<n;i++)
{
char c=s[i];
if(c=='1')a[i+1]=1;
else
{
a[i+1]=0;
upd(1,1,mxn,i+1,0);
}
}
for(int i=1;i<=q;i++)
{
string s;
cin>>s;
if(s[0]=='q')
{
int x,y;
cin>>x>>y;
int k=qr2(1,1,mxn,x,y-1);
if(k!=inf)
{
int off=query(1,0,mxn,0,k,x,y-1);
cout<<k-off<<endl;
continue;
}
//cout<<
cout<<i-query(1,0,mxn,0,i,x,y-1)<<endl;
}
else
{
int x;
cin>>x;
if(a[x]==1)
{
upd(1,1,mxn,x,i);
a[x]=0;
continue;
}
int k=qr2(1,1,mxn,x,x);
upd(1,1,mxn,x,inf);
update(1,0,mxn,k+1,i,x);
a[x]=1;
}
}
return 0;
}
Compilation message
street_lamps.cpp: In constructor 'nod::nod(int, nod*, nod*)':
street_lamps.cpp:10:6: warning: 'nod::val' will be initialized after [-Wreorder]
int val;
^~~
street_lamps.cpp:9:7: warning: 'nod* nod::left' [-Wreorder]
nod *left,*right;
^~~~
street_lamps.cpp:11:2: warning: when initialized here [-Wreorder]
nod(int v=-1,nod *l=NULL,nod *r=NULL):val(v),left(l),right(r){};
^~~
street_lamps.cpp: In member function 'void nod::update(int, int, int, int)':
street_lamps.cpp:21:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
int mid=b+e>>1;
~^~
street_lamps.cpp: In member function 'int nod::query(int, int, int, int)':
street_lamps.cpp:44:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
int mid=b+e>>1;
~^~
street_lamps.cpp: In function 'int query(int, int, int, int, int, int, int)':
street_lamps.cpp:62:11: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
int mid=b+e>>1;
~^~
street_lamps.cpp: In function 'void update(int, int, int, int, int, int)':
street_lamps.cpp:82:11: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
int mid=b+e>>1;
~^~
street_lamps.cpp: In function 'int qr2(int, int, int, int, int)':
street_lamps.cpp:104:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
int m=b+e>>1;
~^~
street_lamps.cpp: In function 'void upd(int, int, int, int, int)':
street_lamps.cpp:117:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
int m=b+e>>1;
~^~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
7 ms |
5112 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
2419 ms |
357704 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
20 ms |
9336 KB |
Output is correct |
| 2 |
Incorrect |
19 ms |
8440 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
11 ms |
5112 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
7 ms |
5112 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
