Submission #865270

#	Time	Username	Problem	Language	Result	Execution time	Memory
865270		LittleOrange	Lamps (JOI19_lamps)	C++17	4 / 100	4 ms	4496 KiB

lamp

#include<bits/stdc++.h>
using namespace std;
using ll = long long;
int main(){
    ios::sync_with_stdio(0);cin.tie(0);
    ll n;
    string a,b;
    cin >> n >> a >> b;
    ll ans = 0;
    for(ll i = 0;i<n;i++) ans += b[i]=='1'&&(i==0||b[i-1]=='0');
    cout << ans << "\n";
}

• Subtask 1: 0 / 6
• Subtask 2: 0 / 41
• Subtask 3: 4 / 4
• Subtask 4: 0 / 49