Submission #810706

#	Time	Username	Problem	Language	Result	Execution time	Memory
810706		_martynas	Advertisement 2 (JOI23_ho_t2)	C++11	100 / 100	373 ms	18184 KiB

Main

#include <bits/stdc++.h>

using namespace std;

#define fi first
#define se second
#define pb push_back
#define all(a) (a).begin(), (a).end()

using pii = pair<int, int>;

const int mxn = 5e5+5;

int n;
int X[mxn], E[mxn];

int main() {
    cin >> n;
    for(int i = 0; i < n; i++) cin >> X[i] >> E[i];
    vector<pii> A;
    for(int i = 0; i < n; i++) {
        A.pb({X[i]-E[i], -(X[i]+E[i])});
    }
    sort(all(A));
    int mxr = -2e9-1;
    int cnt = 0;
    for(auto p : A) {
        int l = p.fi, r = -p.se;
        if(mxr >= r) continue;;
        cnt++, mxr = r;
    }
    cout << cnt << "\n";
    return 0;
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:28:13: warning: unused variable 'l' [-Wunused-variable]
   28 |         int l = p.fi, r = -p.se;
      |             ^

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