Submission #770074

#	Time	Username	Problem	Language	Result	Execution time	Memory
770074		raysh07	만두 (JOI14_ho_t2)	C++17	100 / 100	7 ms	520 KiB

2014_ho_t2

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define INF (int)1e18
#define f first
#define s second

mt19937_64 RNG(chrono::steady_clock::now().time_since_epoch().count());

void Solve() 
{
    int n, m; cin >> m >> n;
    
    vector <int> dp(m + 1, INF);
    dp[0] = 0;
    vector <int> p(m);
    for (auto &x : p) cin >> x;
    
    sort(p.begin(), p.end(), greater<int>());
    
    while (n--){
        int c, e; cin >> c >> e;
        
        for (int j = m; j >= 1; j--){
            int go = max(0LL, j - c);
            
            dp[j] = min(dp[j], dp[go] + e);
        }
    }
    
    int curr = 0;
    int ans = 0;
    int cnt = 0;
    for (auto x : p){
        curr += x;
        cnt++;
        
       // cout << curr << " " << cnt << " " << dp[cnt] << "\n";
        
        ans = max(ans, curr - dp[cnt]);
    }
    
    cout << ans << "\n";
}

int32_t main() 
{
    auto begin = std::chrono::high_resolution_clock::now();
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int t = 1;
  //  cin >> t;
    for(int i = 1; i <= t; i++) 
    {
        //cout << "Case #" << i << ": ";
        Solve();
    }
    auto end = std::chrono::high_resolution_clock::now();
    auto elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(end - begin);
    cerr << "Time measured: " << elapsed.count() * 1e-9 << " seconds.\n"; 
    return 0;
}

• Subtask 1: 25 / 25
• Subtask 2: 35 / 35
• Subtask 3: 40 / 40