Submission #1060344

#	Time	Username	Problem	Language	Result	Execution time	Memory
1060344		khanhtb	Cloud Computing (CEOI18_clo)	C++14	100 / 100	248 ms	2904 KiB

clo

#include <bits/stdc++.h>
#define ll long long
#define ull unsigned long long
#define ld long double
#define pb push_back
#define pf push_front
#define vi vector<ll>
#define vii vector<vi>
#define pll pair<ll, ll>
#define vpll vector<pll>
#define all(a) a.begin(), a.end()
#define fi first
#define se second
using namespace std;
const ll mod = 1e9+7; 
const ll inf = 2e18;
const ll B = 320;
const ll N = 2e5+8;
struct node{
    ll x,y,z,t;
} a[N];
ll n,m;
ll dp[N];
void solve(){
    cin >> n;
    ll bound = 0;
    for(ll i = 1; i <= n; i++){
        ll x,y,z;cin >> x >> y >> z;
        a[i] = {x,y,z,0};
        bound += x;
    }
    cin >> m;
    fill(dp,dp+N,-inf);
    for(ll i = n+1; i <= n+m; i++){
        ll x,y,z;cin >> x >> y >> z;
        a[i] = {x,y,z,1};
    }
    sort(a+1,a+n+m+1,[&](node a, node b){
        return a.y > b.y || (a.y == b.y && a.t < b.t);
    });
    dp[0] = 0;
    for(ll i = 1; i <= n+m; i++){
        if(a[i].t == 0){
            for(ll j = bound; j >= a[i].x; j--){
                dp[j] = max(dp[j],dp[j-a[i].x]-a[i].z);
            }
        }
        else{
            for(ll j = 0; j <= bound-a[i].x; j++){
                dp[j] = max(dp[j],dp[j+a[i].x]+a[i].z);
            }
        }
    }
    ll ans = *max_element(dp,dp+bound+1);
    cout << ans;
}   
signed main(){
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    if (fopen("test.inp", "r")) {
        freopen("test.inp", "r", stdin);
        freopen("test.out", "w", stdout);
    }   
    ll T = 1;
    // cin >> T;
    for (ll i = 1; i <= T; i++) {
        solve();
        cout << '\n';
    }
}

Compilation message (stderr)

clo.cpp: In function 'int main()':
clo.cpp:60:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   60 |         freopen("test.inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
clo.cpp:61:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   61 |         freopen("test.out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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