Submission #1210025

#	Time	Username	Problem	Language	Result	Execution time	Memory
1210025		i_love_spring	Jump (BOI06_jump)	C++20	70 / 100	0 ms	328 KiB

jump

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define ar array
void solve() {  
  int n;
  cin >> n;
  vector<vector<int>> a(n + 1,vector<int>(n + 1));
  vector<vector<ll>> dp(n + 1,vector<ll>(n + 1, 0));
  for (int i = 1;i <= n;i++) {
    for (int j = 1; j <= n;j++) cin >> a[i][j];
  }
  dp[1][1] = 1;
  for (int i = 1; i<= n;i++) {
    for (int j = 1; j <= n;j++) {
      if (a[i][j] == 0) continue;
      if (i + a[i][j] <= n) dp[i + a[i][j]][j] += dp[i][j];
      if (j + a[i][j] <= n) dp[i][j + a[i][j]] += dp[i][j];
    }
  }
  cout << dp[n][n];
}
signed main() {
  ios_base::sync_with_stdio(false);
  cin.tie(nullptr);
  cout.tie(nullptr);
  int t = 1;
//  cin >> t;
  while (t--) {
    solve();
    cout << "\n";
  }
  return 0;
} 

• Subtask 1: 70 / 100