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Cod sursa(job #257018)
#include<fstream.h>
ifstream f("datorii.in");
ofstream g("datorii.out");
long a[1000],n,m,T,V,P,Q;
void suma()
{unsigned long s=0,i;
for(i=P;i<=Q;i++)
s=s+a[i];
g<<s<<"\n";
}
int main()
{ int bit;
long i;
f>>n>>m;
for(i=1;i<=n;i++)
f>>a[i];
for(i=1;i<=m;i++)
{f>>bit;
if(bit)
{f>>P>>Q;
suma();
}
else {f>>T>>V;
a[T]=a[T]-V;
}
}
return 0;
}