제출 #830508

#제출 시각아이디문제언어결과실행 시간메모리
830508vjudge1Lightning Rod (NOI18_lightningrod)C++17
4 / 100
1142 ms156132 KiB
#include<bits/stdc++.h>
#define ll long long
#define fi first
#define se second
using namespace std;
int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int N;
    cin >> N;
    vector<int>X(N+1);
    vector<int>Y(N+1);
    int lirod=0;
    for(int i=1; i<=N; i++) {
        cin >> X[i] >> Y[i];
        if(i>1 && X[i]!=X[i-1]) lirod++;
    }
    cout << lirod+1 << endl;
    return 0;
}
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