#include <bits/stdc++.h>
using namespace std;
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
#define int long long
#define pii pair<int,int>
#define ret return
#define fr first
#define sc second
#define OK puts("OK");
#define NO puts("NO");
#define YES puts("YES");
#define all(s) s.begin(),s.end()
#define allr(s) s.rbegin(),s.rend()
#define nosol puts("-1");
#define pb push_back
#define endi puts("");
#define ordered_set tree <int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update>
const int N = 5e6+12,INF = 1e9+7;
int a[N],n,der[N],b[N],lp[N];
void push(int v,int l,int r){
if (l == r){
der[v] += lp[v];
lp[v] = 0;
}
else {
lp[v<<1] += lp[v];
lp[v<<1|1] += lp[v];
lp[v] = 0;
}
}
void update(int v,int l,int r,int ql,int qr,int x){
if (r < ql || qr < l){
push(v,l,r);
ret ;
}
if (ql <= l && r <= qr){
lp[v] += x;
push(v,l,r);
ret ;
}
push(v,l,r);
int m = l+r>>1;
update(v<<1,l,m,ql,qr,x);
update(v<<1|1,m+1,r,ql,qr,x);
}
int get_ans(int v,int l,int r,int pos){
push(v,l,r);
if (l == r){
ret der[v]+lp[v];
}
int m = l+r>>1;
if (m < pos)
ret get_ans(v<<1|1,m+1,r,pos);
else ret get_ans(v<<1,l,m,pos);
}
main(){
int n,m,i,j;
cin>>n>>m;
for (i=1;i<=n;++i){
cin>>a[i];
}
for (i=2;i<=n;++i)
update(1,1,1000000,min(a[i],a[i-1]),max(a[i],a[i-1]),1);
for (i=2;i<n;++i)
update(1,1,1000000,a[i],a[i],-1);
while (m--){
int t;
cin>>t;
if (t == 2){
int x;
cin>>x;
cout <<get_ans(1,1,1000000,x)<<"\n";
}
else {
int pos,x;
cin>>pos>>x;
if (pos > 1){
update(1,1,1000000,min(a[pos],a[pos-1]),max(a[pos],a[pos-1]),-1);
}
if (pos < n){
update(1,1,1000000,min(a[pos],a[pos+1]),max(a[pos],a[pos+1]),-1);
}
a[pos] = x;
if (pos > 1){
update(1,1,1000000,min(a[pos],a[pos-1]),max(a[pos],a[pos-1]),1);
}
if (pos < n){
update(1,1,1000000,min(a[pos],a[pos+1]),max(a[pos],a[pos+1]),1);
}
}
}
}
Compilation message
game.cpp: In function 'void update(long long int, long long int, long long int, long long int, long long int, long long int)':
game.cpp:46:11: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
46 | int m = l+r>>1;
| ~^~
game.cpp: In function 'long long int get_ans(long long int, long long int, long long int, long long int)':
game.cpp:56:11: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
56 | int m = l+r>>1;
| ~^~
game.cpp: At global scope:
game.cpp:63:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
63 | main(){
| ^~~~
game.cpp: In function 'int main()':
game.cpp:64:12: warning: unused variable 'j' [-Wunused-variable]
64 | int n,m,i,j;
| ^
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
280 KB |
Output is correct |
| 2 |
Correct |
12 ms |
18508 KB |
Output is correct |
| 3 |
Incorrect |
12 ms |
18060 KB |
Output isn't correct |
| 4 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
280 KB |
Output is correct |
| 2 |
Correct |
12 ms |
18508 KB |
Output is correct |
| 3 |
Incorrect |
12 ms |
18060 KB |
Output isn't correct |
| 4 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
280 KB |
Output is correct |
| 2 |
Correct |
12 ms |
18508 KB |
Output is correct |
| 3 |
Incorrect |
12 ms |
18060 KB |
Output isn't correct |
| 4 |
Halted |
0 ms |
0 KB |
- |
