Cod sursa(job #2649758)
Utilizator | Predescu Sebastian Ion PredescuSebastianIon | Data | 16 septembrie 2020 11:11:33 |
---|---|---|---|
Problema | Datorii | Scor | 100 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva de probleme | Marime | 0.65 kb |
#include <fstream>
using namespace std;
ifstream f("datorii.in");
ofstream g("datorii.out");
int n,m,a,tip,x,y,aib[15001];
int ub(int a)
{
return (a^(a-1))&a;
}
void scad(int x,int val)
{
for(int i=x; i<=n; i+=ub(i))
{
aib[i]-=val;
}
}
int calc(int x)
{
int sol=0;
for(int i=x; i>0; i-=ub(i))
{
sol+=aib[i];
}
return sol;
}
int main()
{
f>>n>>m;
for(int i=1; i<=n; i++)
{
f>>a;
scad(i,-a);
}
for(int i=1; i<=m; i++)
{
f>>tip>>x>>y;
if(tip==0)scad(x,y);
else g<<calc(y)-calc(x-1)<<'\n';
}
return 0;
}