USACO Silver 2015 December - Switching on the Lights

C++

Implementation

#include <bits/stdc++.h>

using namespace std;

const int MX = 1e2;

int n, m;
bool light[MX][MX], vis[MX][MX], turn[MX][MX];
vector<vector<vector<pair<int, int>>>> change(MX, vector<vector<pair<int, int>>>(MX, vector<pair<int, int>>()));
int sol = 1, di[4] = {0, 1, 0, -1}, dj[4] = {1, 0, -1, 0};