Submission #139627

#	Time	Username	Problem	Language	Result	Execution time	Memory
139627		mechfrog88	Exhibition (JOI19_ho_t2)	C++14	0 / 100	2 ms	376 KiB

joi2019_ho_t2

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#pragma GCC optimize("unroll-loops,no-stack-protector")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
 
using namespace __gnu_pbds;
using namespace std;
 
template <typename T>
using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
 
typedef long long ll;
typedef long double ld;

struct pic{
    ll v,s;
    bool operator <(const pic& rhs) const{
        return v < rhs.v;
    }
};
 
int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    ll n,m;
    cin >> n >> m;
    vector <pic> arr(n);
    for (int z=0;z<n;z++){
        cin >> arr[z].s >> arr[z].v;
    }
    vector <ll> frame(m);
    for (int z=0;z<m;z++){
        cin >> frame[z];
    }
    sort(arr.begin(),arr.end());
    sort(frame.begin(),frame.end());
    ll l = 0;
    ll r = 1e9;
    ll ans = 0;
    while (l <= r){
        ll mid = (l+r)/2;
        vector <ll> temp;
        for (int z=0;z<n;z++){
            if (arr[z].s <= mid) temp.push_back(arr[z].s);
        }
        ll i = 0;
        bool ok =false;
        for (ll z=0;z<temp.size() && i < m;z++,i++){
            while (i < m && temp[z] > frame[i]){
                i++;
            }
            ans = max(ans,z+1);
            if (z == temp.size()-1) ok = true;
        }
        if (ok){
            l = mid+1;
        } else {
            r = mid-1;
        }
    }
    cout << ans << endl;
}

Compilation message (stderr)

joi2019_ho_t2.cpp: In function 'int main()':
joi2019_ho_t2.cpp:49:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for (ll z=0;z<temp.size() && i < m;z++,i++){
                     ~^~~~~~~~~~~~
joi2019_ho_t2.cpp:54:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             if (z == temp.size()-1) ok = true;
                 ~~^~~~~~~~~~~~~~~~

• Subtask 1: 0 / 10
• Subtask 2: 0 / 40
• Subtask 3: 0 / 50