Submission #962547

#	Time	Username	Problem	Language	Result	Execution time	Memory
962547		Amr	Street Lamps (APIO19_street_lamps)	C++17	20 / 100	74 ms	13288 KiB

street_lamps

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
#define S second
#define F first
#define all(x) (x).begin(),(x).end()
#define sz size()
#define Yes cout << "YES" << endl
#define No cout << "NO" << endl
#define pb(x) push_back(x);
#define endl '\n'
#define fast ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
const int N=3e5+7;
ll INF=INT_MAX,mod=1e9+7;
int TT=1;
ll power(ll x, unsigned int y)
{
    ll res = 1;
    x = x; // % mod;
    if (x == 0) return 0;
    while (y > 0)
    {
        if (y & 1) res = (res*x)  ; // % mod;
        y = y>>1;
        x = (x*x) ; // % mod;
    }
    return res;
}
pair<ll,ll> ans[N];
void solve()
{
    ll n , q; cin >> n >> q;
    string s; cin >> s;
    for(int i = 0; i < n; i++) if(s[i]=='1') ans[i].S = 0;
    for(int i =1 ; i <= q; i++)
    {
        string t; cin >> t;
        if(t[0]=='q')
        {
            ll a, b; cin >> a >> b;
            a--,b--;
            if(s[a]=='0') cout << ans[a].F << endl;
            else cout << ans[a].F + i-ans[a].S << endl;
        }
        else
        {
            ll a; cin >> a; a--;

            if(s[a]=='0') s[a] = '1', ans[a].S = i;
            else s[a] = '0', ans[a].F +=i-ans[a].S;
        }
    }
}
int main(){
    //freopen("friday.in","r",stdin);
    //freopen("friday.out","w",stdout);
    fast;
    while(TT--)
        solve();

    return 0;
}

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