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Submission #633522

# Submission time Handle Problem Language Result Execution time Memory
633522 2022-08-22T16:37:01 Z Ahmed57 Global Warming (NOI13_gw) C++14
19 / 40
 1000 ms 65536 KB 
#include <bits/stdc++.h>

using namespace std;
//BIT Fenwick tree
int n ;
int bit[6000001]={0};
void add(int e,int v){
    while(e<=n*4){
        bit[e]+=v;
        e+=e&-e;
    }
}
long long sum(int e){
    long long res = 0;
    while(e>=1){
        res+=bit[e];
        e -= e&-e;
    }
    return res;
}
int main(){
    cin>>n;
    vector<int> v,w,so;v.push_back(2);
    for(int i = 0;i<n;i++){
        int x;cin>>x;
        w.push_back(x);
        so.push_back(x);
    }
    sort(so.begin(),so.end());
    int z = 2;
    map<int,int>cmp;
    for(int i = 0;i<n;i++){
        cmp[so[i]] = z++;
        if(i&&so[i]==so[i-1])z--;
    }
    for(int i = 0;i<n;i++){
        v.push_back(cmp[w[i]]*2);
    }
    for(int i = 0;i<n;i++){
        if(v[i]<v[i+1]){
            add(v[i+1],-1);
            add(v[i],1);
        }
    }
    long long ma = 0;
    for(int i = 2;i<=cmp[so[n-1]]*2;i++){
        ma = max(ma,sum(i));
    }
    cout<<ma<<"\n";
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 340 KB Output is correct
2 Correct 2 ms 468 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 30 ms 2068 KB Output is correct
2 Correct 29 ms 2112 KB Output is correct
3 Correct 25 ms 2120 KB Output is correct
4 Correct 27 ms 2144 KB Output is correct
5 Correct 28 ms 2088 KB Output is correct

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 111 ms 7888 KB Output is correct
2 Correct 91 ms 7696 KB Output is correct
3 Correct 110 ms 7948 KB Output is correct
4 Correct 101 ms 7880 KB Output is correct
5 Correct 100 ms 7776 KB Output is correct

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1076 ms 65536 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 11.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1090 ms 49760 KB Time limit exceeded
2 Halted 0 ms 0 KB -