Submission #870478

#	Time	Username	Problem	Language	Result	Execution time	Memory
870478		imarn	Advertisement 2 (JOI23_ho_t2)	C++14	0 / 100	39 ms	6236 KiB

Main

#include<bits/stdc++.h>
#define ll long long
#define pii pair<ll,ll>
#define pll pair<ll,ll>
#define all(x) x.begin(),x.end()
#define pb push_back
#define sz(x) (int)x.size()
#define f first
#define s second
using namespace std;
bool cmp(pair<ll,pii> a,pair<ll,pii> b){
    if(a.f==b.f)return a.s.s-a.s.f<b.s.s-b.s.f;
    return a.f<b.f;
}
int main(){
    ios_base::sync_with_stdio(0);cin.tie(0);
    ll n;cin>>n;
    vector<pair<ll,pii>>q;
    for(int i=0;i<n;i++){
        int si,ti;cin>>si>>ti;
        q.pb({si+ti,{si,ti}});
    }sort(q.begin(),q.end(),cmp);
    int dp[n];
    dp[0]=1;int sz=1;
    vector<ll>v;v.pb(-q[0].s.f+q[0].s.s);
    for(int i=1;i<q.size();i++){
        int idx=upper_bound(v.begin(),v.end(),-q[i].s.f+q[i].s.s)-v.begin();
        if(idx==sz)v.pb(-q[i].s.f+q[i].s.s),dp[i]=idx+1,sz++;
        else v[idx]=-q[i].s.f+q[i].s.s,dp[i]=idx+1;
    }cout<<sz;
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:26:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, std::pair<long long int, long long int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 |     for(int i=1;i<q.size();i++){
      |                 ~^~~~~~~~~
Main.cpp:23:9: warning: variable 'dp' set but not used [-Wunused-but-set-variable]
   23 |     int dp[n];
      |         ^~

• Subtask 1: 0 / 10
• Subtask 2: 0 / 23
• Subtask 3: 0 / 36
• Subtask 4: 0 / 31