Cod sursa(job #850240)

Utilizator danutbodbodnariuc danut danutbod Data 8 ianuarie 2013 10:02:39
Problema Subsecventa de suma maxima Scor 65
Compilator cpp Status done
Runda Arhiva educationala Marime 0.74 kb
#include <fstream>
#define NMax 6000003
using namespace std;
ifstream f("ssm.in");
ofstream g("ssm.out");
long long n,i,j,x,semn,maxi,pmaxi,ss,a[NMax],sum[NMax];
string s;
int main()
{
    f>>n;f.get();
    getline(f,s);s=s+" ";
    x=0;semn=1;
    for(i=0; i<s.length(); i++)
      if(s[i]=='-')semn=-1;
        else if(s[i]>='0'&&s[i]<='9')x=x*10+s[i]-'0';
              else {a[++j]=semn*x;x=0;semn=1;}
    for (i=1; i<=n; i++)
     if(sum[i-1]>0)sum[i]=sum[i-1]+a[i];
        else sum[i]=a[i];
    maxi=-1000000000000LL;
    for (i=1; i<=n; i++)
      if(maxi<sum[i]){maxi=sum[i];pmaxi=i;}
    for(i=pmaxi; i>=1; i--){
          ss+=a[i];
          if(ss==maxi)break;
    }
    g<<maxi<<" "<<i<<" "<<pmaxi<<'\n';
    return 0;
}