Submission #503100

#	Time	Username	Problem	Language	Result	Execution time	Memory
503100		stefantaga	Street Lamps (APIO19_street_lamps)	C++14	20 / 100	106 ms	11660 KiB

street_lamps

#include <bits/stdc++.h>

using namespace std;
int v[300005],n,q,x,y,ult[300005],nr[300005],i,j,t;
int main()
{
    ios_base :: sync_with_stdio(false);
    cin.tie(0);
    #ifdef HOME
    ifstream cin("date.in");
    ofstream cout("date.out");
    #endif // HOME
    cin>>n>>q;
    for (i=1;i<=n;i++)
    {
        char ch;
        cin>>ch;
        v[i]=ch-'0';
        nr[i]=v[i];
        ult[i]=1;
    }
    for (i=1;i<=q;i++)
    {
        char tip[15];
        cin>>tip;
        if (strcmp(tip,"query")==0)
        {
            cin>>x>>y;
            if (v[x]==1)
            {
                cout<<nr[x]+i-ult[x]<<'\n';
            }
            else
            cout<<nr[x]<<'\n';
        }
        else
        {
            cin>>x;
            if (v[x]==1)
            {
                nr[x]=nr[x]+i-ult[x];
            }
            ult[x]=i;
            v[x]=1-v[x];
        }
    }
    return 0;
}

• Subtask 1: 0 / 20
• Subtask 2: 20 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 20
• Subtask 5: 0 / 20