Submission #995509

#	Time	Username	Problem	Language	Result	Execution time	Memory
995509		O_Elmasry	Cloud Computing (CEOI18_clo)	C++17	0 / 100	256 ms	262144 KiB

clo

#include <bits/stdc++.h>
using namespace std;
#define endl "\n"
#define yes cout << "YES" << endl
#define no cout << "NO" << endl
#define ll long long
#define int long long
#define pb push_back
#define all(v) v.begin(), v.end()
#define rall(v) v.rbegin(), v.rend()
#define mem(v, x) memset(v, x, sizeof v);
#ifndef ONLINE_JUDGE
#define dbg(v) cout << "Line(" << __LINE__ << ") -> " << #v << " = " << (v) << endl;
#else
#define dbg(v)
#endif
template <typename A, typename B>
ostream &operator<<(ostream &os, const pair<A, B> &p) { return os << '(' << p.first << ", " << p.second << ')'; }
template <typename T_container, typename T = typename enable_if<!is_same<T_container, string>::value, typename T_container::value_type>::type>
ostream &operator<<(ostream &os, const T_container &v)
{
        os << '{';
        string sep;
        for (const T &x : v)
                os << sep << x, sep = ", ";
        return os << '}';
}
const ll mxN = (int)2e5 + 5, mod = 998244353 /*1e9+7*/, INF = 1e18;
void file(string name)
{
        freopen((name + ".in").c_str(), "r", stdin);
        freopen((name + ".out").c_str(), "w", stdout);
}
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count() * ((uint64_t) new char | 1));
template <typename T>
T Rand(T low, T high)
{
        return uniform_int_distribution<T>(low, high)(rng);
}
template <typename T>
inline void smin(T &a, T b) { a = min(a, b); }
template <typename T>
inline void smax(T &a, T b) { a = max(a, b); }
struct computer{
        int c,f,v;
        friend istream &operator>>(istream &is,computer &p){
                is >> p.c >> p.f >> p.v;
                return is;
        }       
        friend ostream &operator<<(ostream &os,computer &p){
                os << p.c << " " << p.f << " " << p.v;
                return os;
        }
        bool operator<(const computer &p){
                if(p.f==f)return c>p.c;
                return f>p.f;
        }
};
void solve()
{
        vector<computer>v;
        int n;
        cin >> n;
        int s=0;
        for(int i=0;i<n;i++){
                computer cur;
                cin >> cur;
                s+=cur.c;
                cur.v*=-1;
                v.pb(cur);
        }
        int m;
        cin >> m;
        for(int i=0;i<m;i++){
                computer cur;
                cin >> cur;
                cur.c*=-1;
                v.pb(cur);
        }
        sort(all(v));
        vector<int>dp(s+1,-INF);
        dp[0]=0;
        for(int i=0;i<v.size();i++){
                if(v[i].c<0){
                        for(int j=0;j<=s+v[i].c;j++){
                                smax(dp[j],dp[j-v[i].c]+v[i].v);
                        }
                }
                else{
                        for(int j=s;j>=v[i].c;j--){
                                smax(dp[j],dp[j-v[i].c]+v[i].v);
                        }
                }       
        }
        ll ans=0;
        // for(auto &i:dp)cout << i << endl;
        for(auto &i:dp)smax(ans,i);
        cout << ans << endl;
}
signed main()
{
        ios::sync_with_stdio(0);
        cin.tie(nullptr);
        cout.tie(nullptr);
#ifndef ONLINE_JUDGE
        file("test");
#endif
        int tc = 1;
        // cin >> tc;
        while (tc--)
        {
                solve();
        }
}

Compilation message (stderr)

clo.cpp: In function 'void solve()':
clo.cpp:83:22: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<computer>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   83 |         for(int i=0;i<v.size();i++){
      |                     ~^~~~~~~~~
clo.cpp: In function 'void file(std::string)':
clo.cpp:31:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   31 |         freopen((name + ".in").c_str(), "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
clo.cpp:32:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   32 |         freopen((name + ".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