Submission #952977

#	Time	Username	Problem	Language	Result	Execution time	Memory
952977		Vladth11	Street Lamps (APIO19_street_lamps)	C++14	20 / 100	5067 ms	20236 KiB

street_lamps

#include <bits/stdc++.h>
#define debug(x) cerr << #x << " " << x << "\n"
#define debugs(x) cerr << #x << " " << x << " "
#pragma GCC optimize ("Ofast")
#pragma GCC target ("avx2")

using namespace std;
typedef long long ll;
typedef pair <ll, ll> pii;

const ll NMAX = 300001;
const int INF = 1e9;
const ll nrbits = 20;
const ll MOD = 998244353;

int a[NMAX];
string s[NMAX];
int qa[NMAX];
int qb[NMAX];
int sol[NMAX];

signed main() {
#ifdef HOME
    ifstream cin(".in");
    ofstream cout(".out");
#endif // HOME
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    int n, i, q;
    cin >> n >> q;
    for(i = 1; i <= n; i++){
        char c;
        cin >> c;
        a[i] = c - '0';
    }
    for(i = 1; i <= q; i++){
        cin >> s[i];
        cin >> qa[i];
        if(s[i][0] == 'q'){
            cin >> qb[i];
            qb[i]--;
        }
    }
    for(i = 1; i <= q; i++){
        for(int j = i; j <= q; j++){
            int ok = 1;
            for(int t = qa[j]; t <= qb[j]; t++){
                ok &= (a[t] == 1);
            }
            if(ok){
                sol[j]++;
            }
        }
        if(s[i][0] == 't'){
            a[qa[i]] ^= 1;
        }
        if(s[i][0] == 'q')
        cout << sol[i] << "\n";
    }
    return 0;
}

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