Submission #968254

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
968254	2024-04-23 08:54:05	LittleOrange	Line Town (CCO23_day1problem3)	C++17	0 / 25	0 ms	348 KiB

Main

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#include<bits/stdc++.h>
using namespace std;
using ll = long long;
const ll big = 1e18;
int main(){
    ios::sync_with_stdio(0);cin.tie(0);
    ll n;
    cin >> n;
    vector<ll> a(n);
    for(ll &i : a) cin >> i;
    vector<ll> l(n,big),r(n,big);
    ll cur = 0;
    vector<ll> b = a;
    for(ll i = 0;i<n;i++){
        if (b[i]==1){
            if (i+1==n) break;
            if (b[i+1]==1){
                b[i] = -1;
                b[i+1] = -1;
                cur++;
            }else{
                if (i+2==n||b[i+2]!=-1) break;
                b[i] = -1;
                b[i+2] = 1;
            }
        }
        l[i] = cur;
    }
    b = a;
    reverse(b.begin(),b.end());
 
 
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