Submission #1196912

#	Time	Username	Problem	Language	Result	Execution time	Memory
1196912		YassirSalama	Street Lamps (APIO19_street_lamps)	C++20	20 / 100	69 ms	7528 KiB

street_lamps

#include <bits/stdc++.h>
using namespace std;
#define endl "\n"
#define int long long
using ull=unsigned long long;
using ll=long long;
using pii=pair<int,int>;
const int dx[4] = {1,0,-1,0}, dy[4] = {0,1,0,-1};
const int mod=1e9+7;
#define OVL(x,s) for(auto y:x) cout<<y<<s; cout<<"\n";
template <typename T> istream& operator>>(istream& is, vector<T> &a) {
    copy_n(istream_iterator<T>(is), a.size(), a.begin()); return is;}
#ifdef IOI
template<typename A, typename B> ostream& operator<<(ostream &os, const pair<A, B> &p) { return os << '(' << p.first << ", " << p.second << ')'; }
template<typename T_container, typename T = typename enable_if<!is_same<T_container, string>::value, typename T_container::value_type>::type> ostream& operator<<(ostream &os, const T_container &v) { os << '{'; string sep; for (const T &x : v) os << sep << x, sep = ", "; return os << '}'; }
 
void dbg_out() { cout << endl; }
template<typename Head, typename... Tail> void dbg_out(Head H, Tail... T) { cout << ' ' << H; dbg_out(T...); }
#define dbg(...) cout << "(" << #__VA_ARGS__ << "):", dbg_out(__VA_ARGS__);
#else
#define dbg(...) 1337;
#endif
#define pb push_back
#define F first
#define S second
#define all(v) v.begin(),v.end()
signed main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n;
    cin>>n;
    int q;
    cin>>q;
    string s;
    cin>>s;
    vector<vector<int>> queries;
    int ans[n];memset(ans,0,sizeof(ans));
    int lst[n];memset(lst,-1,sizeof(lst));
    for(int i = 0;i<n;i++){
        if(s[i]=='1'){
            lst[i] = 0;
        }else lst[i] = -1;
    }
    for(int j  =1;j<=q;j++){
        string a;
        cin>>a;
        if(a[0]=='t'){
            int i;
            cin>>i;
            i--;
            int x = s[i]-'0';
            x^=1;
            dbg(i,x,lst[i])
            if(x==1){
                lst[i] = j;
            }else{
                int r = j-lst[i];
                ans[i] += r;
            }
            s[i] = char(x+'0');
        }else{
            int a,b;
            cin>>a>>b;
            a--;
            if(s[a]=='1'){
                dbg(j,a)
                int r = j-lst[a];
                ans[a]+=r;
                lst[a] = j;
            }
            cout<<ans[a]<<endl;
        }
    }
}

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