Submission #1044822

#	Time	Username	Problem	Language	Result	Execution time	Memory
1044822		vjudge1	Street Lamps (APIO19_street_lamps)	C++17	0 / 100	5087 ms	524288 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;
    vi arr[q+1];
    for(int i=0; i<=q; i++) arr[i]=vector<int>(n+1);
    for(int i=1; i<=n; i++){
        arr[1][i]=s[i-1]-'0';
    }
    
    for(int i=1; i<=q; i++){
        string h; cin >> h;
        if(i!=q)copy(arr[i].begin(), arr[i].end(), arr[i+1].begin());
        if(h[0]=='t'){
            int a; cin >> a;
            arr[i+1][a]=1-arr[i+1][a];
        }
        else{
            int l,r; cin >> l >> r;
            int ans=0;
            for(int j=1; j<=i; j++){
                int ok=1;
                for(int f=l; f<r; f++){
                    if(!arr[j][f]){
                        ok=0;
                        break;
                    }
                }
                if(ok){
                    ans++;
                }
            }
            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: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 20
• Subtask 5: 0 / 20