Submission

Score: 100

User: TheRealN

Problemset: เปิดไฟ

Language: cpp

Time: 0.690 second

Submitted On: 2026-10-12 13:26:49

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

int main() {
	int i, j, n, m, x, y, s, c;
	
	cin >> n >> m;
	vector<int> v(n, 0);
	
	for (i = 0; i < m; i++) {
		cin >> c >> x >> y;
		s = 0;
		switch (c) {
			case 0 :
				for (j = x - 1; j < y; j++) {
					if (v[j] == 0) {
						v[j] = 1;
					}
					else {
						v[j] = 0;
					}
				}
				break;
			case 1 :
				for (j = x - 1; j < y; j++) {
					if (v[j] == 1) {
						s += 1;
					}
				}
				cout << s << endl;
				break;
		}
	}
	
	return 0;
}