Submission #743274

#	Time	Username	Problem	Language	Result	Execution time	Memory
743274		vjudge1	Lightning Rod (NOI18_lightningrod)	C++17	0 / 100	1346 ms	15676 KiB

Main

#include <iostream>
#include <unordered_map>
using namespace std;

int main ()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    long long n, a, b, sum = 0, preva;
    cin >> n;
    for(long long i = 0;i < n;++i)
    {
        cin >> a >> b;
        if(i != 0)
        {
            if(a != preva)
                sum++;
        }
        preva = a;
    }
    cout << sum;
}

• Subtask 1: 0 / 4
• Subtask 2: 0 / 7
• Subtask 3: 0 / 12
• Subtask 4: 0 / 21
• Subtask 5: 0 / 26
• Subtask 6: 0 / 10
• Subtask 7: 0 / 20