Submission #971863

#	Time	Username	Problem	Language	Result	Execution time	Memory
971863		vivkostov	Street Lamps (APIO19_street_lamps)	C++14	0 / 100	13 ms	24668 KiB

street_lamps

#include<bits/stdc++.h>
#define endl '\n'
using namespace std;
void speed()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    /*#ifdef ONLINE_JUDGE
    freopen("taxi.in", "r", stdin);
    freopen("taxi.out", "w", stdout);
    #endif
    */
}
int n,q;
string s[305];
string a[300005];
int l[300005],r[300005];
int answer(int l,int r,int ti)
{
    int br=0;
    for(int i=0;i<ti;i++)
    {
        for(int j=l;j<=r;j++)
        {
            if(s[i][j]=='0')break;
            if(j==r)br++;
        }
    }
    return br;
}
void read()
{
    cin>>n>>q>>s[0];
    for(int i=1;i<=q;i++)
    {
        cin>>a[i]>>l[i];
        l[i]--;
        s[i]=s[i-1];
        if(a[i]=="query")
        {
            cin>>r[i];
            r[i]--;
            cout<<answer(l[i],r[i],i)<<endl;
        }
        else
        {
            s[i][l[i]]++;
            if(s[i][l[i]]=='2')s[i][l[i]]='0';
        }
    }
}
int main()
{
    speed();
    read();
    return 0;
}

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