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#include <bits/stdc++.h>
#define NMAX 15005
using namespace std;
ifstream f("datorii.in");
ofstream g("datorii.out");
int n,m,v[NMAX],t,p,q;
void achitare(int p,int valoare)
{
v[p]-=valoare;
}
int deAchitat(int p, int q)
{
int ret=0;
for (int i=p;i<=q;i++)
{
ret+=v[i];
}
return ret;
}
int main()
{
f>>n>>m;
for (int i=1;i<=n;i++)
{
f>>v[i];
}
for (int i=1;i<=m;i++)
{
f>>t>>p>>q;
if (t==0)
{
achitare(p,q);
}
else
{
g<<deAchitat(p,q)<<"\n";
}
}
return 0;
}