Submission #994481

#	Time	Username	Problem	Language	Result	Execution time	Memory
994481		cpdreamer	Cloud Computing (CEOI18_clo)	C++14	18 / 100	28 ms	1372 KiB

clo

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <utility>
using namespace __gnu_pbds;
using namespace std;

typedef tree<int,null_type,less<int>,rb_tree_tag,
        tree_order_statistics_node_update> indexed_set;
const int max_n=INT_MAX;
typedef long long  ll;
#define LLM LONG_LONG_MAX
#define pb push_back
#define F first
#define L length()
#define all(v) v.begin(),v.end()
#define V vector
#define S second
const long long MOD = 1000000007; // 1e9 + 7

void file(){
    freopen("input.txt.txt","r",stdin);
    freopen("output.txt.txt","w",stdout);
}
void setio(string s) {
    freopen((s + ".in").c_str(), "r", stdin);
    freopen((s + ".out").c_str(), "w", stdout);
}



void solve(){
    int n;
    cin>>n;
    pair<int,int>A[n+1];
    int Per[n+1],P[n+1];
    for(int i=1;i<=n;i++){
        int b;
        cin>>b>>A[i].F>>A[i].S;
    }
    sort(A+1,A+n+1);
    for(int i=1;i<=n;i++){
        Per[i]=A[i].F;
        P[i]=A[i].S;
    }
    int m;cin>>m;
    pair<int,int>B[m+1];
    int Per1[m+1],P1[m+1];
    for(int i=1;i<=m;i++){
        int b;
        cin>>b>>B[i].F>>B[i].S;
    }
    sort(B+1,B+1+m);
    for(int i=1;i<=m;i++){
        Per1[i]=B[i].F;
        P1[i]=B[i].S;
    }
    ll dp[n+1][m+1];
    memset(dp,0,sizeof(dp));
    for(int i=1;i<=n;i++){
        for(int j=1;j<=m;j++){
            //dp[i][j]=buy form first i and sell to first j
            for(int g=j;g>=1;g--){
                ll c=dp[i-1][g-1];
                if(Per[i]>=Per1[g])
                    c+=P1[g]-P[i];
                dp[i][j]=max(dp[i][j],c);
                dp[i][j]=max(dp[i][j],max(dp[i-1][j],dp[i][j-1]));
            }
        }
    }
    cout<<dp[n][m]<<endl;
}
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    //file();
    solve();
    return 0;
}

Compilation message (stderr)

clo.cpp: In function 'void file()':
clo.cpp:21:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   21 |     freopen("input.txt.txt","r",stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
clo.cpp:22:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   22 |     freopen("output.txt.txt","w",stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
clo.cpp: In function 'void setio(std::string)':
clo.cpp:25:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   25 |     freopen((s + ".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
clo.cpp:26:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   26 |     freopen((s + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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