Submission #358550

#	Time	Username	Problem	Language	Result	Execution time	Memory
358550		Sparky_09	Cloud Computing (CEOI18_clo)	C++17	0 / 100	1 ms	512 KiB

clo

#include <bits/stdc++.h>
using namespace std;
#define rep(i, a, b) for(int i = a; i < (b); ++i)
#define all(x) begin(x), end(x)
#define sz(x) (int)(x).size()
typedef long long ll;
typedef pair<ll, ll> pii;
typedef vector<ll> vi;
typedef vector<pii> vpi;

void usaco(string s){
  freopen((s+".in").c_str(), "r", stdin);
  freopen((s+".out").c_str(), "w", stdout);
}

int main() {
	cin.tie(0)->sync_with_stdio(0);
	cin.exceptions(cin.failbit);
#ifdef LOCAL_DEFINE
	freopen("input.txt", "r", stdin);
#endif
  ll n; cin >> n;
  vector<tuple<ll,ll,ll>> v(n);
  for(ll i = 0; i < n; i++){
    ll a, b, c;
    cin >> a >> b >> c;
    v[i] = {b, c, a};
  }
  ll k; cin >> k;
  vector<tuple<ll,ll,ll>> s(k);
  for(ll i = 0; i < k; i++){
    ll a, b, c;
    cin >> a >> b >> c;
    s[i] = {b, c, a};
  }
  sort(all(v)); sort(all(s));
  ll dp[55], ans;
  const ll INF = 1e15;
  ans = -INF;
  for(ll i = 0; i < 55; i++) dp[i] = -INF;
  dp[0] = 0;
  ll curr = n-1;
  for(ll i = k-1; i >= 0; i--){
    for(ll j = curr; j >= 0; j--){
      ll a1, a2, b1, b2, c1, c2;
      tie(b1, c1, a1) = s[i];
      tie(b2, c2, a2) = v[j];

      if(b1 > b2){ curr--; break; }
      //curr--;

      //cout << a1 << ' ' << b1 << ' ' << c1 << ' ' << a2 << ' ' << b2 << ' ' << c2 << '\n';
      for(ll l = 51; l >= 0; l--){
        if(l-a2>=0) dp[l] = max(dp[l], dp[l-a2] - c2);
        ans = max(ans, dp[l]);
      }
      //cout << dp[8] << '\n';
      for(ll l = 0; l < 51-a1; l++){
        if(dp[l+a1] > -INF) dp[l] = max(dp[l], dp[l+a1] + c1);
        //if(i==k-1) cout << l << ' ' << dp[l] << ' ' << dp[l+a1] << '\n';
        ans = max(ans, dp[l]);
      }
      curr = j;
    }
  }
  cout << ans << '\n';
}

Compilation message (stderr)

clo.cpp: In function 'void usaco(std::string)':
clo.cpp:12:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   12 |   freopen((s+".in").c_str(), "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
clo.cpp:13:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   13 |   freopen((s+".out").c_str(), "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 18
• Subtask 2: 0 / 18
• Subtask 3: 0 / 18
• Subtask 4: 0 / 18
• Subtask 5: 0 / 18
• Subtask 6: 0 / 10