Submission #858287

#	Time	Username	Problem	Language	Result	Execution time	Memory
858287		12345678	Street Lamps (APIO19_street_lamps)	C++17	0 / 100	50 ms	6744 KiB

street_lamps

#include <bits/stdc++.h>

using namespace std;

const int nx=3e5+5;
int n, q, lst[nx], sm[nx], l, a, b;
string s;

int main()
{
    cin.tie(NULL)->sync_with_stdio(false);
    cin>>n>>q>>s;
    for (int i=1; i<=n; i++) lst[i]=(s[i-1]-'0')-1;
    for (int i=1; i<=q; i++)
    {
        cin>>s;
        if (s[0]=='t')
        {
            cin>>l;
            if (lst[l]==-1) lst[l]=i;
            else sm[i]+=(i-lst[i]), lst[i]=-1;
        }
        else
        {
            cin>>a>>b;
            if (lst[a]!=-1) cout<<sm[a]+(i-lst[a])<<'\n';
            else cout<<sm[a]<<'\n';
        }
    }
}

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