Submission #934194

#	Time	Username	Problem	Language	Result	Execution time	Memory
934194		irmuun	Street Lamps (APIO19_street_lamps)	C++17	20 / 100	5084 ms	9936 KiB

street_lamps

#include<bits/stdc++.h>
 
using namespace std;
 
#define ll long long
#define pb push_back
#define ff first
#define ss second
#define all(s) s.begin(),s.end()
#define rall(s) s.rbegin(),s.rend()

int main(){
    ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
    ll n,q;
    cin>>n>>q;
    char s[n+5],cur[n+5];
    for(ll i=1;i<=n;i++){
        cin>>s[i];
    }
    vector<pair<ll,ll>>que(q);
    for(ll i=0;i<q;i++){
        string t;
        cin>>t;
        if(t=="toggle"){
            ll j;
            cin>>j;
            que[i]={j,-1};
        }
        else{
            ll a,b;
            cin>>a>>b;
            que[i]={a,b};
            ll ans=0;
            for(ll j=1;j<=n;j++){
                cur[j]=s[j];
            }
            for(ll j=0;j<=i;j++){
                bool ok=true;
                for(ll k=a;k<b;k++){
                    if(cur[k]=='0'){
                        ok=false;
                        break;
                    }
                }
                if(ok){
                    ans++;
                }
                if(que[j].ss==-1){
                    ll p=que[j].ff;
                    if(cur[p]=='1') cur[p]='0';
                    else cur[p]='1';
                }
            }
            cout<<ans<<"\n";
        }
    }
}

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