Submission #1029923

#	Time	Username	Problem	Language	Result	Execution time	Memory
1029923		Peter2017	Cloud Computing (CEOI18_clo)	C++14	100 / 100	1839 ms	3932 KiB

clo

#include <bits/stdc++.h>
#define fi first
#define se second
#define ll long long
#define pii pair<int,int>
#define pll pair<ll,ll>
#define pill pair<int,ll>
#define mem(a, b) memset(a, b, sizeof(a))
#define MASK(i) (1LL << (i))
#define BIT(x, i) (((x) >> (i)) & 1)
#define name "test"

using namespace std;

const int N = 2e3 + 5;
const int mod = 1e9 + 7;
const ll oo = 1e18;

template <typename T1, typename T2> bool maxi(T1 &a, T2 b){if (a < b){a = b; return 1;} return 0;}
template <typename T1, typename T2> bool mini(T1 &a, T2 b){if (a > b){a = b; return 1;} return 0;}

struct item{
    int c, f, v;
    bool operator<(const item &other) const {
        return f > other.f;
    }
};

int n;
int m;
item a[N];
item b[N];
ll f[2][N][105];

void load(){
    cin.tie(0)->sync_with_stdio(0);
    if (fopen(name".inp", "r")){
        freopen(name".inp", "r", stdin);
        freopen(name".out", "w", stdout);
    }
}

void input(){
    cin >> n;
    for (int i = 1; i <= n; i++) cin >> a[i].c >> a[i].f >> a[i].v;
    cin >> m;
    for (int i = 1; i <= m; i++) cin >> b[i].c >> b[i].f >> b[i].v;
}

void solve(){
    sort(a + 1, a + n + 1);
    sort(b + 1, b + m + 1);
    mem(f, -0x3f);
    f[0][0][0] = 0;
    for (int i = 1; i <= n; i++){
        int cur = i & 1;
        int pre = cur ^ 1;
        f[cur][0][0] = 0;
        for (int k = 100; k >= 0; k--){
            maxi(f[cur][0][k], f[pre][0][k]);
            maxi(f[cur][0][k], f[cur][0][k + 1]);
            if (k >= a[i].c) maxi(f[cur][0][k], f[pre][0][k - a[i].c] - a[i].v);
        }
        for (int j = 1; j <= m; j++){
            for (int k = 100; k >= 0; k--){
                maxi(f[cur][j][k], f[pre][j][k]);
                maxi(f[cur][j][k], f[cur][j - 1][k]);
                maxi(f[cur][j][k], f[cur][j][k + 1]);
                if (k >= a[i].c)
                    maxi(f[cur][j][k], f[pre][j][k - a[i].c] - a[i].v);
                if (b[j].f <= a[i].f && k >= b[j].c)
                    maxi(f[cur][j][k - b[j].c], f[cur][j - 1][k] + b[j].v);
            }
        }
        mem(f[pre], -0x3f);
    }
    cout << f[n & 1][m][0];
}

int main(){
    load();
    input();
    solve();
}

Compilation message (stderr)

clo.cpp: In function 'void load()':
clo.cpp:38:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   38 |         freopen(name".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
clo.cpp:39:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   39 |         freopen(name".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