Submission #1091570

#	Time	Username	Problem	Language	Result	Execution time	Memory
1091570		LmaoLmao	Cloud Computing (CEOI18_clo)	C++14	0 / 100	255 ms	203188 KiB

clo

#include <bits/stdc++.h>
#define fi first
#define se second
#define ll long long
using namespace std;
using ii=pair<int,int>;
using aa=array<ll,3>;

ll dp[100005];

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);cout.tie(NULL);
    freopen("in.txt", "r", stdin);
    freopen("out.txt", "w", stdout);
    int n;
    cin >> n;
    vector<aa> a;
    int sum=0;
    for(int i=1;i<=n;i++) {
        aa x;
        cin >> x[1] >> x[0] >> x[2];
        sum+=x[1];
        x[2]=-x[2];
        a.push_back(x);
    }
    int m;
    cin >> m;
    for(int i=1;i<=m;i++) {
        aa x;
        cin >> x[1] >> x[0] >> x[2];
        x[1]=-x[1];
        a.push_back(x);
    }
    for(int i=0;i<=sum;i++) dp[i]=-1e18;
    dp[0]=0;
    sort(a.begin(),a.end(),greater<>());
    ll ans=0;
    for(aa x:a) {
        if(x[1]<0) {
            for(int i=0;i<=sum;i++) {
                if(i+x[1]>=0 && i+x[1]<=sum) {
                    dp[i+x[1]]=max(dp[i+x[1]],dp[i]+x[2]);
                    ans=max(ans,dp[i+x[1]]);
                }
            }
        }
        else {
            for(int i=sum;i>=0;i--) {
                if(i+x[1]>=0 && i+x[1]<=sum) {
                    dp[i+x[1]]=max(dp[i+x[1]],dp[i]+x[2]);
                    ans=max(ans,dp[i+x[1]]);
                }
            }
        }
    }
    cout << ans;
}

Compilation message (stderr)

clo.cpp: In function 'int main()':
clo.cpp:14:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |     freopen("in.txt", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
clo.cpp:15:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |     freopen("out.txt", "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