Submission #272894

#	Time	Username	Problem	Language	Result	Execution time	Memory
272894		doowey	Arcade (NOI20_arcade)	C++14	100 / 100	222 ms	16748 KiB

Arcade

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef pair<int, int> pii;

#define fi first
#define se second
#define mp make_pair
#define fastIO ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);

int main(){
    fastIO;
    int n, m;
    cin >> n >> m;
    int x[m], y[m];
    for(int i = 0 ; i < m ; i ++ )cin >> y[i];
    for(int i = 0 ; i < m ; i ++ )cin >> x[i];
    vector<pii> sh;
    for(int i = 0 ; i < m; i ++ ){
        sh.push_back(mp(x[i] + y[i], y[i] - x[i]));
    }
    sort(sh.begin(), sh.end());
    vector<int> ans;
    int id;
    for(int i = m - 1; i >= 0 ; i -- ){
        id = lower_bound(ans.begin(), ans.end(), sh[i].se) - ans.begin();
        if(id == ans.size())
            ans.push_back(sh[i].se);
        else
            ans[id] = sh[i].se;
    }
    cout << ans.size() << "\n";
    return 0;
}

Compilation message (stderr)

Arcade.cpp: In function 'int main()':
Arcade.cpp:29:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |         if(id == ans.size())
      |            ~~~^~~~~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 11 / 11
• Subtask 3: 12 / 12
• Subtask 4: 21 / 21
• Subtask 5: 14 / 14
• Subtask 6: 20 / 20
• Subtask 7: 15 / 15