Submission #861033

#	Time	Username	Problem	Language	Result	Execution time	Memory
861033		guagua0407	Two Dishes (JOI19_dishes)	C++17	0 / 100	145 ms	97476 KiB

dishes

//#pragma GCC optimize("O3")
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pii pair<int,int>
#define f first
#define s second
#define all(x) x.begin(),x.end()
#define _ ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);

void setIO(string s) {
    freopen((s + ".in").c_str(), "r", stdin);
    freopen((s + ".out").c_str(), "w", stdout);
}

const int mxn=1e6+5;
ll a[mxn],S[mxn],Q[mxn];
ll b[mxn],T[mxn],P[mxn];
int pa[mxn],pb[mxn];
vector<int> qa[mxn],qb[mxn];
int n,m;

int main() {_
    cin>>n>>m;
    for(int i=1;i<=n;i++){
        cin>>a[i]>>S[i]>>P[i];
        a[i]+=a[i-1];
    }
    for(int i=1;i<=m;i++){
        cin>>b[i]>>T[i]>>Q[i];
        b[i]+=b[i-1];
    }
    for(int i=1;i<=n;i++){
        int pos=upper_bound(b,b+m+1,S[i]-a[i])-b-1;
        pa[i]=pos;
        if(pos>=0) qa[pos].push_back(i);
    }
    for(int i=1;i<=m;i++){
        int pos=upper_bound(a,a+n+1,T[i]-b[i])-a-1;
        pb[i]=pos;
        if(pos>=0) qb[pos].push_back(i);
    }
    /*for(int i=1;i<=n;i++){
        cout<<pa[i]<<' ';
    }cout<<'\n';
    for(int i=1;i<=m;i++){
        cout<<pb[i]<<' ';
    }cout<<'\n';*/
    ll ans=0;
    int cur=1;
    for(int i=1;i<=n;i++){
        while(cur<=m){
            ll sum=0;
            if(pb[cur]>=i-1) sum+=Q[cur];
            for(auto v:qa[cur-1]){
                if(v>=i) sum-=P[v];
            }
            if(sum>0){
                if(pb[cur]>=i-1) ans+=Q[cur];
                cur++;
            }
            else break;
        }
        if(pa[i]>=cur-1){
            ans+=P[i];
        }
        //cout<<cur<<' '<<ans<<'\n';
    }
    for(;cur<=m;cur++){
        if(pb[cur]==n) ans+=Q[cur];
    }
    cout<<ans<<'\n';
    return 0;
}
//maybe its multiset not set

Compilation message (stderr)

dishes.cpp: In function 'void setIO(std::string)':
dishes.cpp:12:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |     freopen((s + ".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
dishes.cpp:13:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |     freopen((s + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 3
• Subtask 3: 0 / 7
• Subtask 4: 0 / 39
• Subtask 5: 0 / 11
• Subtask 6: 0 / 9
• Subtask 7: 0 / 17
• Subtask 8: 0 / 9