Cod sursa(job #2937686)
| Utilizator | Data | 10 noiembrie 2022 20:17:22 | |
|---|---|---|---|
| Problema | Datorii | Scor | 100 |
| Compilator | cpp-64 | Status | done |
| Runda | Arhiva de probleme | Marime | 0.6 kb |
#include <bits/stdc++.h>
using namespace std;
ifstream fin("datorii.in");
ofstream fout("datorii.out");
int n,m,aib[15010],i,j,x,c,y;
void add(int val,int poz,int semn)
{
for(int i=poz;i<=n;i=i+(i&(-i)))
aib[i]+=val*semn;
}
int op(int poz)
{
int s=0;
for(int i=poz;i>=1;i=i-(i&(-i)))
s=s+aib[i];
return s;
}
int main()
{
fin>>n>>m;
for(i=1;i<=n;i++)
{
fin>>x;
add(x,i,1);
}
while(m--)
{
fin>>c>>x>>y;
if(c==0)
add(y,x,-1);
else fout<<op(y)-op(x-1)<<'\n';
}
return 0;
}
