Cod sursa(job #2414802)
Utilizator | Data | 25 aprilie 2019 09:08:15 | |
---|---|---|---|
Problema | Datorii | Scor | 0 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva de probleme | Marime | 0.62 kb |
#include <fstream>
using namespace std;
ifstream fi("datorii.in");
ofstream fo("datorii.out");
int N,S[11000];
int M,i,q,x,a,b;
void add(int a,int b)
{
int k;
for(k=a;k<=N;k+=(k&(-k))) S[i]+=b;
}
int total(int a)
{
int k,suma=0;
for(k=a;k>=1;k-=(k&(-k))) suma+=S[i];
return suma;
}
int main()
{
fi >> N >> M;
for(i=1;i<=N;i++)
{
fi >> x;
add(i,x);
}
for(i=1;i<=M;i++)
{
fi >> q >> a >> b;
if(q) fo << total(b)-total(a-1) << '\n';
else add(a,-b);
}
}