c#include <bits/stdc++.h> using namespace std; int dp[20]; int main() { cin.tie(NULL); cout.tie(NULL); ios_base::sync_with_stdio(false); int N; cin >> N; for(int i = 0; i < N; i++){ int T, P; cin >> T >> P; dp[i + 1] = max(dp[i], dp[i + 1]); dp[i + T] = max(dp[i] + P, dp[i + T]); } cout << dp[N] << "\n"; return 0; }