Submission #1044876

#	Time	Username	Problem	Language	Result	Execution time	Memory
1044876		vjudge1	Street Lamps (APIO19_street_lamps)	C++17	20 / 100	91 ms	15332 KiB

street_lamps

#pragma GCC optimize("unroll-loops,Ofast,O3")
#include <bits/stdc++.h>
#define pb push_back
#define mp make_pair
#define spc << " " <<
#define endl "\n"
#define all(x) x.begin(), x.end()
#define int long long
#define ii pair<long long,int>
#define vi vector<int>
#define vii vector<ii>
#define st first
#define nd second
#define inf 1e15
#define MOD 1000000007
#define MX 200005
using namespace std;



void solve(){
    int n,q; cin >> n >> q;
    string s; cin >> s;
    int tot[n+1], last[n+1], cur[n+1];
    for(int i=1; i<=n; i++){
        tot[i]=0;
        last[i]=0;
        cur[i]=s[i-1]-'0';
    }
    for(int i=1; i<=q; i++){
        cin >> s;
        if(s[0]=='t'){
            int a; cin >> a;
            if(cur[a]==0){
                last[a]=i;
            }
            else{
                tot[a]+=i-last[a];
            }
            cur[a]=1-cur[a];
        }
        else{
            int l,r; cin >> l >> r;
            int ans=tot[l];
            if(cur[l]) ans+=i-last[l];
            cout << ans << endl;
        }
    }
}
 
 
signed main(){
    ios_base::sync_with_stdio(false);cin.tie(0);
    #ifdef Local
    freopen("in","r",stdin);
    freopen("out","w",stdout);
    #endif
 
    /*freopen("nondec.in","r",stdin);
    freopen("nondec.out","w",stdout);*/
 
    int t=1;
    //cin >> t;
    while(t--) solve();
}

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