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- #include<iostream>
- #include<vector>
- #include<map>
- #include<cmath>
- #include<string>
- #include<fstream>
- #include<algorithm>
- #include<unordered_set>
- #include<iomanip>
- #include<set>
- using namespace std;
- const int MOD = 1e9 + 7;
- int mod(int n) {
- if (n >= MOD) {
- return n % MOD;
- }
- return n;
- }
- int main() {
- int n, k;
- cin >> n >> k;
- // vector<vector<bool> > used(2, vector<bool> (n + 1, false));
- vector<int> v(n);
- for (int i = 0; i < k; ++i) {
- int x, y;
- cin >> x >> y;
- --x;
- if (y == 2) {
- y = 0;
- }
- v[x] |= (1 << y);
- }
- /*for (int i = 1; i <= n; ++i){
- cout << v[i] << " ";
- }
- cout << endl;*/
- vector<vector<int> > dp(n, vector<int> (4));
- for (int mask = v[1]; mask < 4; ++mask) {
- if (mask == 0) {
- if (v[0] == 0) {
- dp[0][mask] = 2;
- } else {
- dp[0][mask] = 1;
- }
- }
- if (mask == 1) {
- if (v[0] == 1 || v[0] == 3) {
- dp[0][mask] = 0;
- } else {
- dp[0][mask] = 1;
- }
- }
- if (mask == 2) {
- if (v[0] == 2 && v[0] == 3) {
- dp[0][mask] = 0;
- } else {
- dp[0][mask] = 1;
- }
- }
- if (mask == 3 && v[0] == 0) {
- dp[0][mask] = 1;
- }
- }
- for (int i = 1; i < n; ++i) {
- for (int mask = v[i + 1]; mask < 4; ++mask) {
- if (mask == 0) {
- dp[i][mask] = mod(mod(mod(2 * dp[i - 1][0]) + dp[i - 1][1]) + mod(dp[i - 1][2] + dp[i - 1][3]));
- }
- if (mask == 1) {
- dp[i][mask] = mod(dp[i - 1][0] + dp[i - 1][2]);
- }
- if (mask == 2) {
- dp[i][mask] = mod(dp[i - 1][0] + dp[i - 1][1]);
- }
- if (mask == 3) {
- dp[i][mask] = dp[i - 1][0];
- }
- }
- }
- for (int i = 0; i < n; ++i) {
- for (int mask = 0; mask < 4; ++mask) {
- cout << dp[i][mask] << " ";
- }
- cout << endl;
- }
- cout << dp[n - 1][0];
- return 0;
- }
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