Submission #211446

#	Time	Username	Problem	Language	Result	Execution time	Memory
211446		VEGAnn	Street Lamps (APIO19_street_lamps)	C++14	20 / 100	135 ms	12364 KiB

street_lamps

#include <bits/stdc++.h>
#define all(x) x.begin(),x.end()
#define sz(x) ((int)x.size())
#define pll pair<ll, ll>
#define MP make_pair
#define PB push_back
#define pii pair<int, int>
#define pi3 pair<pii, int>
#define ft first
#define sd second
#define MP3(a,b,c) MP(MP(a,b),c)
using namespace std;
typedef long long ll;
const int N = 300100;
const int M = 100100;
const int Q = 100100;
const int CO = 200100;
const int oo = 2e9;
const int B = 1;
const int MB = M / B + 10;
string s, qr;
int n, q, tp[N], lst[N], sum[N];

int main(){

#ifdef _LOCAL
    freopen("in.txt","r",stdin);
#else
    ios_base::sync_with_stdio(0); cin.tie(0);
#endif // _LOCAL

    cin >> n >> q >> s;

    for (int i = 0; i < n; i++){
        sum[i] = 0;
        tp[i] = s[i] - '0';
        lst[i] = 0;
    }

    for (int i = 1; i <= q; i++){
        cin >> qr;

        if (qr[0] == 't'){
            int x; cin >> x;
            x--;

            if (tp[x] == 1)
                sum[x] += i - lst[x];

            tp[x] ^= 1;
            lst[x] = i;
        } else {
            int a, b; cin >> a >> b;
            a--; b--;

            int ans = sum[a];

            if (tp[a] == 1)
                ans += i - lst[a];

            cout << ans << '\n';
        }
    }

    return 0;
}

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