Submission #905221

#	Time	Username	Problem	Language	Result	Execution time	Memory
905221		Petrix	Advertisement 2 (JOI23_ho_t2)	C++17	100 / 100	340 ms	6528 KiB

Main

#include <iostream>
#include <algorithm>
#include <vector>
using namespace std;

vector<pair<int,int>> v;

bool cmp(pair<int,int> a,pair<int,int> b){
    if(a.first!=b.first)
        return a.first<b.first;
    return a.second>b.second;
}

int main()
{
    int n,cnt=0,i,curent=-1,a,b;
    cin>>n;
    for(i=0;i<n;i++){
        cin>>a>>b;
        v.push_back({a-b,b+a});
    }
    sort(v.begin(),v.end(),cmp);
    for(i=0;i<v.size();i++){
        if(curent<v[i].second){
            cnt++;curent=v[i].second;
        }
    }
    cout<<cnt;
    return 0;
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:23:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |     for(i=0;i<v.size();i++){
      |             ~^~~~~~~~~

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