Submission #291779

#	Time	Username	Problem	Language	Result	Execution time	Memory
291779		crossing0ver	Arcade (NOI20_arcade)	C++17	Compilation error	0 ms	0 KiB

Arcade

#include<bits/stdc++.h>
using namespace std;
int n,m;
main() {
    cin >> n >> m;
    vector<pair<int,int> > v(m);
    for (int i = 0; i < m; i++) {
        int a,b;
        cin >> v[i].first;
       // v.push_back({-a-b,-b+a});
    }
    for (int i = 0;i < m ;i ++) {
        cin >> v[i].second;
        v[i] = {-v[i].first - v[i].second,-v[i].first + v[i].second};
    }
    sort(v.begin(),v.end());
    vector<int> sub;
    for (auto i : v) {
        int x = i.se;
        auto it = lower_bound(sub.begin(),sub.end(),x);
        if (it == sub.end()) sub.push_back(x);
        else *it = x;
    }
    cout << sub.size();

}

Compilation message (stderr)

Arcade.cpp:4:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    4 | main() {
      |      ^
Arcade.cpp: In function 'int main()':
Arcade.cpp:8:13: warning: unused variable 'a' [-Wunused-variable]
    8 |         int a,b;
      |             ^
Arcade.cpp:8:15: warning: unused variable 'b' [-Wunused-variable]
    8 |         int a,b;
      |               ^
Arcade.cpp:19:19: error: 'struct std::pair<int, int>' has no member named 'se'
   19 |         int x = i.se;
      |                   ^~