Submission #633573

#	Time	Username	Problem	Language	Result	Execution time	Memory
633573		Ahmed57	Global Warming (NOI13_gw)	C++14	19 / 40	1097 ms	65536 KiB

gw

#include <bits/stdc++.h>

using namespace std;
long long n;
long long pre[2000005];
vector<long long> v,w,s;
map<long long,long long> cmp;
int main(){
    cin>>n;
    v.push_back(2);
    for(int i = 0;i<n;i++){
        long long x;cin>>x;
        w.push_back(x);
        s.push_back(x);
    }
    sort(s.begin(),s.end());
    long long z = 1;
    for(int i = 0;i<n;i++){
        if(i&&s[i]==s[i-1])z--;
        cmp[s[i]] = ++z;
    }
    for(int i = 0;i<w.size();i++){
        v.push_back(cmp[w[i]]*2);
    }
    for(int i = 0;i<v.size()-1;i++){
        if(v[i]<v[i+1]){
            pre[v[i+1]]--;
            pre[v[i]]++;
        }
    }
    long long ma = 0 , cur = 0;
    for(int i = 2;i<=z*2;i++){
        cur+=pre[i];
        ma = max(ma,cur);
    }
    cout<<ma<<"\n";
}

Compilation message (stderr)

gw.cpp: In function 'int main()':
gw.cpp:22:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |     for(int i = 0;i<w.size();i++){
      |                   ~^~~~~~~~~
gw.cpp:25:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |     for(int i = 0;i<v.size()-1;i++){
      |                   ~^~~~~~~~~~~

• Subtask 1: 6 / 6
• Subtask 2: 6 / 6
• Subtask 3: 7 / 7
• Subtask 4: 0 / 10
• Subtask 5: 0 / 11