Submission #862213

#	Time	Username	Problem	Language	Result	Execution time	Memory
862213		yeediot	Two Dishes (JOI19_dishes)	C++14	100 / 100	1915 ms	246648 KiB

dishes

#include<bits/stdc++.h>
using namespace std;
#define int long long
#define F first
#define S second
#define all(x) x.begin(),x.end()
#define pii pair<int,int>
#define pb push_back
#define sz(x) (int)(x.size())
#define chmin(x,y) x=min(x,y)
#define chmax(x,y) x=max(x,y)
#define vi vector<int>
#define vp vector<pii>
#define vvi vector<vi>
//Don't open the standings during contests.
const int mxn=1e6+5;
vector<int>a(mxn),s(mxn),p(mxn),b(mxn),t(mxn),q(mxn);
int pre[mxn],pre2[mxn];
vector<pii>pt[mxn];
int dif[mxn];
signed main(){
    ios::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
    int n,m;
    cin>>n>>m;
    for(int i=1;i<=n;i++){
        cin>>a[i]>>s[i]>>p[i];
        pre[i]=pre[i-1]+a[i];
    }
    for(int i=1;i<=m;i++){
        cin>>b[i]>>t[i]>>q[i];
        pre2[i]=pre2[i-1]+b[i];
    }
    int ans=0;
    for(int i=1;i<=n;i++){
        if(pre[i]>s[i])continue;
        int x=upper_bound(pre2+1,pre2+m+1,s[i]-pre[i])-pre2;
        ans+=p[i];
        if(x<=m)pt[i].pb({x,-p[i]});
    }
    for(int j=1;j<=m;j++){
        if(pre2[j]>t[j])continue;
        if(pre2[j]+pre[n]<=t[j])ans+=q[j];
        else{
            int y=upper_bound(pre+1,pre+n+1,t[j]-pre2[j])-pre;
            pt[y].pb({j,q[j]});
        }
    }
    set<int>st;
    for(int i=0;i<=n;i++){
        sort(all(pt[i]));
        for(auto [x,y]:pt[i]){
            //cout<<x<<' ';
            if(!st.count(x)){
                st.insert(x);
                dif[x]=0;
            }
            dif[x]+=y;
        }
        for(auto [x,fuck]:pt[i]){
            //維護前綴max所以把dif<0的都刪掉
            auto it=st.find(x);
            while(it!=st.end() and dif[*it]<0){
                int temp=dif[*it];
                it=st.erase(it);
                if(it!=st.end())dif[*it]+=temp;
            }
        }
    }
    for(auto i:st)ans+=dif[i];
    cout<<ans<<'\n';
}
 /*
 input:
  2 3 6
  2 1 3
  2 2 2
 */

Compilation message (stderr)

dishes.cpp: In function 'int main()':
dishes.cpp:52:18: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   52 |         for(auto [x,y]:pt[i]){
      |                  ^
dishes.cpp:60:18: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   60 |         for(auto [x,fuck]:pt[i]){
      |                  ^

• Subtask 1: 5 / 5
• Subtask 2: 3 / 3
• Subtask 3: 7 / 7
• Subtask 4: 39 / 39
• Subtask 5: 11 / 11
• Subtask 6: 9 / 9
• Subtask 7: 17 / 17
• Subtask 8: 9 / 9