#pragma GCC optimize("Ofast")
#pragma GCC optimize("O3,unroll-loops")
//#pragma GCC target("avx,avx2,bmi,bmi2,lzcnt,popcnt")
#include<bits/stdc++.h>
using namespace std;
typedef array<int,4> arr4;
int const n_max=3e5+15;
set<int> zero;
//char s[n_max];
arr4 arr[4*n_max];
int ans[n_max];
int cnt=0;
int fen[n_max];
inline void upd(int idx,int val)
{
for(;idx<n_max;idx+=idx&-idx)fen[idx]+=val;
}
inline int qr(int idx)
{
int ret=0;
for(;idx;idx-=idx&-idx)ret+=fen[idx];
return ret;
}
void sol(int l,int r)
{
if(l>=r)return;
int mid=(l+r)>>1,p=l;
sol(l,mid);sol(mid+1,r);
for(int i=mid+1;i<=r;i++)
{
if(arr[i][2])continue;
while(p<=mid&&arr[p][1]>=arr[i][1]){upd(arr[p][3],arr[p][2]),p++;}
ans[arr[i][3]]+=qr(arr[i][3]);
}
for(int i=l;i<p;i++)
{
upd(arr[i][3],-arr[i][2]);
}
inplace_merge(arr+l,arr+mid+1,arr+r+1,[&](const arr4 &a,const arr4 &b)
{return a[1]>b[1];});
}
string s;
int n,q;
signed main()
{
cin.tie(nullptr)->sync_with_stdio(false);
memset(ans,-1,sizeof(ans));
//scanf("%d%d%s",&n,&q,s+1);
cin>>n>>q>>s;
zero.insert(0);
for(int i=0;i<n;i++)
{
if(!(s[i]-='0'))zero.insert(i+1);
}
zero.insert(n+1);
//char com[10];
string com;
int a,b;
for(int i=1;i<=q;i++)
{
//scanf("%s",com);
cin>>com;
if(com[0]=='q')
{
//scanf("%d%d",&a,&b);
cin>>a>>b;
b--;
arr[cnt++]={a,b,0,i};
ans[i]=*zero.lower_bound(a)<=b? 0:i;
}
else
{
//scanf("%d",&a);
cin>>a;
if(s[a-1])
{
auto it=zero.insert(a).first;
int l=*prev(it),m=a,r=*next(it);
arr[cnt++]={l+1,r-1,i,i};
arr[cnt++]={l+1,m-1,-i,i};
arr[cnt++]={m+1,r-1,-i,i};
}
else
{
auto it=zero.find(a);
int l=*prev(it),m=a,r=*next(it);
arr[cnt++]={l+1,r-1,-i,i};
arr[cnt++]={l+1,m-1,i,i};
arr[cnt++]={m+1,r-1,i,i};
zero.erase(it);
}
s[a-1]^=1;
}
}
sort(arr, arr+cnt, [&](const arr4 &a, const arr4 &b)
{return a[0]^b[0] ? a[0]<b[0] : ((a[1]!=b[1])? a[1]>b[1]:(b[2]==0)); });
sol(0,cnt-1);
for(int i=1;i<=q;i++)
{
if(ans[i]==-1)continue;
else cout<<ans[i]<<"\n";//printf("%d\n",ans[i]);
}
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
4440 KB |
Output is correct |
2 |
Correct |
1 ms |
4560 KB |
Output is correct |
3 |
Correct |
1 ms |
4444 KB |
Output is correct |
4 |
Correct |
1 ms |
4440 KB |
Output is correct |
5 |
Correct |
1 ms |
4444 KB |
Output is correct |
6 |
Correct |
1 ms |
4444 KB |
Output is correct |
7 |
Correct |
1 ms |
4444 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
376 ms |
23452 KB |
Output is correct |
2 |
Correct |
296 ms |
24516 KB |
Output is correct |
3 |
Correct |
282 ms |
25148 KB |
Output is correct |
4 |
Correct |
304 ms |
32464 KB |
Output is correct |
5 |
Correct |
287 ms |
31336 KB |
Output is correct |
6 |
Correct |
345 ms |
35612 KB |
Output is correct |
7 |
Correct |
311 ms |
32588 KB |
Output is correct |
8 |
Correct |
169 ms |
20232 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
4444 KB |
Output is correct |
2 |
Correct |
1 ms |
4444 KB |
Output is correct |
3 |
Correct |
1 ms |
4444 KB |
Output is correct |
4 |
Correct |
1 ms |
4444 KB |
Output is correct |
5 |
Correct |
357 ms |
47832 KB |
Output is correct |
6 |
Correct |
359 ms |
40424 KB |
Output is correct |
7 |
Correct |
347 ms |
31344 KB |
Output is correct |
8 |
Correct |
303 ms |
20256 KB |
Output is correct |
9 |
Correct |
217 ms |
13720 KB |
Output is correct |
10 |
Correct |
245 ms |
15768 KB |
Output is correct |
11 |
Correct |
248 ms |
16364 KB |
Output is correct |
12 |
Correct |
452 ms |
33108 KB |
Output is correct |
13 |
Correct |
294 ms |
19268 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
4440 KB |
Output is correct |
2 |
Correct |
1 ms |
4440 KB |
Output is correct |
3 |
Correct |
2 ms |
4444 KB |
Output is correct |
4 |
Correct |
2 ms |
4444 KB |
Output is correct |
5 |
Correct |
379 ms |
27520 KB |
Output is correct |
6 |
Correct |
357 ms |
29460 KB |
Output is correct |
7 |
Correct |
328 ms |
36748 KB |
Output is correct |
8 |
Correct |
301 ms |
39952 KB |
Output is correct |
9 |
Correct |
250 ms |
27180 KB |
Output is correct |
10 |
Correct |
233 ms |
30904 KB |
Output is correct |
11 |
Correct |
248 ms |
28228 KB |
Output is correct |
12 |
Correct |
242 ms |
31112 KB |
Output is correct |
13 |
Correct |
243 ms |
28412 KB |
Output is correct |
14 |
Correct |
223 ms |
31668 KB |
Output is correct |
15 |
Correct |
460 ms |
32984 KB |
Output is correct |
16 |
Correct |
299 ms |
20032 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
4440 KB |
Output is correct |
2 |
Correct |
1 ms |
4560 KB |
Output is correct |
3 |
Correct |
1 ms |
4444 KB |
Output is correct |
4 |
Correct |
1 ms |
4440 KB |
Output is correct |
5 |
Correct |
1 ms |
4444 KB |
Output is correct |
6 |
Correct |
1 ms |
4444 KB |
Output is correct |
7 |
Correct |
1 ms |
4444 KB |
Output is correct |
8 |
Correct |
376 ms |
23452 KB |
Output is correct |
9 |
Correct |
296 ms |
24516 KB |
Output is correct |
10 |
Correct |
282 ms |
25148 KB |
Output is correct |
11 |
Correct |
304 ms |
32464 KB |
Output is correct |
12 |
Correct |
287 ms |
31336 KB |
Output is correct |
13 |
Correct |
345 ms |
35612 KB |
Output is correct |
14 |
Correct |
311 ms |
32588 KB |
Output is correct |
15 |
Correct |
169 ms |
20232 KB |
Output is correct |
16 |
Correct |
1 ms |
4444 KB |
Output is correct |
17 |
Correct |
1 ms |
4444 KB |
Output is correct |
18 |
Correct |
1 ms |
4444 KB |
Output is correct |
19 |
Correct |
1 ms |
4444 KB |
Output is correct |
20 |
Correct |
357 ms |
47832 KB |
Output is correct |
21 |
Correct |
359 ms |
40424 KB |
Output is correct |
22 |
Correct |
347 ms |
31344 KB |
Output is correct |
23 |
Correct |
303 ms |
20256 KB |
Output is correct |
24 |
Correct |
217 ms |
13720 KB |
Output is correct |
25 |
Correct |
245 ms |
15768 KB |
Output is correct |
26 |
Correct |
248 ms |
16364 KB |
Output is correct |
27 |
Correct |
452 ms |
33108 KB |
Output is correct |
28 |
Correct |
294 ms |
19268 KB |
Output is correct |
29 |
Correct |
2 ms |
4440 KB |
Output is correct |
30 |
Correct |
1 ms |
4440 KB |
Output is correct |
31 |
Correct |
2 ms |
4444 KB |
Output is correct |
32 |
Correct |
2 ms |
4444 KB |
Output is correct |
33 |
Correct |
379 ms |
27520 KB |
Output is correct |
34 |
Correct |
357 ms |
29460 KB |
Output is correct |
35 |
Correct |
328 ms |
36748 KB |
Output is correct |
36 |
Correct |
301 ms |
39952 KB |
Output is correct |
37 |
Correct |
250 ms |
27180 KB |
Output is correct |
38 |
Correct |
233 ms |
30904 KB |
Output is correct |
39 |
Correct |
248 ms |
28228 KB |
Output is correct |
40 |
Correct |
242 ms |
31112 KB |
Output is correct |
41 |
Correct |
243 ms |
28412 KB |
Output is correct |
42 |
Correct |
223 ms |
31668 KB |
Output is correct |
43 |
Correct |
460 ms |
32984 KB |
Output is correct |
44 |
Correct |
299 ms |
20032 KB |
Output is correct |
45 |
Correct |
244 ms |
17528 KB |
Output is correct |
46 |
Correct |
176 ms |
19508 KB |
Output is correct |
47 |
Correct |
207 ms |
21948 KB |
Output is correct |
48 |
Correct |
345 ms |
33164 KB |
Output is correct |
49 |
Execution timed out |
5058 ms |
24656 KB |
Time limit exceeded |
50 |
Halted |
0 ms |
0 KB |
- |