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Submission #543243

# Submission time Handle Problem Language Result Execution time Memory
543243 2022-03-29T23:45:40 Z Deepesson Hacker (BOI15_hac) C++17
40 / 100
 1000 ms 38516 KB 
#include <bits/stdc++.h>
#define MAX 2100000
#define LSB(A) (A&(-A))
using ll = long long;
typedef std::pair<ll,ll> pll;
typedef std::pair<ll,pll> plp;
ll ft[MAX];
void update(int t,int k){t+=8;
    while(t<MAX){
        ft[t]+=k;
        t+=LSB(t);
    }
}
ll query(int t){t+=8;
    ll ans=0;
    while(t>0){
        ans+=ft[t];
        t-=LSB(t);
    }
    return ans;
}
ll seg(int l,int r){
    return query(r)-query(l-1);
}
ll array[MAX];
int main()
{
    std::ios::sync_with_stdio(false);
    std::cin.tie(0);
    std::cout.tie(0);
    int N;
    std::cin>>N;
    long long soma=0;
    for(int i=0;i!=N;++i){
        std::cin>>array[i];
        soma+=array[i];
    }
    for(int i=0;i!=MAX;++i){
        array[i]=array[i%N];
    }
    for(int i=0;i!=MAX;++i){
        update(i,array[i]);
    }
    ll respostas[N]={};
    ll puxa=N/2;
    ll ans=0;
    ll left[N]={},right[N]={};
    std::vector<plp> vec;
    for(int i=0;i!=N;++i){
        respostas[i]=seg(i,i+puxa-1);
        int l = i,r=(i+puxa-1)%N;
      ///  std::cout<<l<<" "<<r<<" "<<respostas[i]<<"\n";
        vec.push_back({respostas[i],{l,i+puxa-1}});
    }
    ll total[N]={};
    {
        for(int i=0;i!=N;++i){
            for(auto&x:vec){
                if(i>=x.second.first&&i<=x.second.second)continue;
                if(x.second.second>=N){
                    int t = x.second.second%N;
                    if(t>=i)continue;
                }
                total[i]=std::max(total[i],x.first);
            }
        }
    }
    std::cout<<(soma-(*std::min_element(total,&total[N])))<<"\n";
}

Compilation message

hac.cpp: In function 'int main()':
hac.cpp:51:19: warning: unused variable 'r' [-Wunused-variable]
   51 |         int l = i,r=(i+puxa-1)%N;
      |                   ^
hac.cpp:46:8: warning: unused variable 'ans' [-Wunused-variable]
   46 |     ll ans=0;
      |        ^~~
hac.cpp:47:8: warning: unused variable 'left' [-Wunused-variable]
   47 |     ll left[N]={},right[N]={};
      |        ^~~~
hac.cpp:47:19: warning: unused variable 'right' [-Wunused-variable]
   47 |     ll left[N]={},right[N]={};
      |                   ^~~~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 81 ms 33100 KB Output is correct
2 Correct 76 ms 33072 KB Output is correct
3 Correct 72 ms 33104 KB Output is correct
4 Correct 69 ms 33148 KB Output is correct
5 Correct 71 ms 33136 KB Output is correct
6 Correct 71 ms 33076 KB Output is correct
7 Correct 73 ms 33208 KB Output is correct
8 Correct 73 ms 33144 KB Output is correct
9 Correct 75 ms 33148 KB Output is correct
10 Correct 71 ms 33100 KB Output is correct
11 Correct 71 ms 33072 KB Output is correct
12 Correct 69 ms 33092 KB Output is correct
13 Correct 72 ms 33100 KB Output is correct
14 Correct 74 ms 33136 KB Output is correct
15 Correct 85 ms 33116 KB Output is correct
16 Correct 71 ms 33108 KB Output is correct
17 Correct 71 ms 33152 KB Output is correct
18 Correct 70 ms 33100 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 81 ms 33100 KB Output is correct
2 Correct 76 ms 33072 KB Output is correct
3 Correct 72 ms 33104 KB Output is correct
4 Correct 69 ms 33148 KB Output is correct
5 Correct 71 ms 33136 KB Output is correct
6 Correct 71 ms 33076 KB Output is correct
7 Correct 73 ms 33208 KB Output is correct
8 Correct 73 ms 33144 KB Output is correct
9 Correct 75 ms 33148 KB Output is correct
10 Correct 71 ms 33100 KB Output is correct
11 Correct 71 ms 33072 KB Output is correct
12 Correct 69 ms 33092 KB Output is correct
13 Correct 72 ms 33100 KB Output is correct
14 Correct 74 ms 33136 KB Output is correct
15 Correct 85 ms 33116 KB Output is correct
16 Correct 71 ms 33108 KB Output is correct
17 Correct 71 ms 33152 KB Output is correct
18 Correct 70 ms 33100 KB Output is correct
19 Correct 70 ms 33192 KB Output is correct
20 Correct 71 ms 33176 KB Output is correct
21 Correct 74 ms 33228 KB Output is correct
22 Correct 102 ms 33452 KB Output is correct
23 Correct 144 ms 33596 KB Output is correct
24 Correct 95 ms 33356 KB Output is correct
25 Correct 150 ms 33564 KB Output is correct
26 Correct 144 ms 33604 KB Output is correct
27 Correct 74 ms 33116 KB Output is correct
28 Correct 73 ms 33092 KB Output is correct
29 Correct 73 ms 33092 KB Output is correct
30 Correct 145 ms 33636 KB Output is correct
31 Correct 145 ms 33684 KB Output is correct

Subtask #3
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 72 ms 33136 KB Output is correct
2 Correct 72 ms 33208 KB Output is correct
3 Correct 146 ms 33604 KB Output is correct
4 Execution timed out 1092 ms 38516 KB Time limit exceeded
5 Halted 0 ms 0 KB -

Subtask #4
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 81 ms 33100 KB Output is correct
2 Correct 76 ms 33072 KB Output is correct
3 Correct 72 ms 33104 KB Output is correct
4 Correct 69 ms 33148 KB Output is correct
5 Correct 71 ms 33136 KB Output is correct
6 Correct 71 ms 33076 KB Output is correct
7 Correct 73 ms 33208 KB Output is correct
8 Correct 73 ms 33144 KB Output is correct
9 Correct 75 ms 33148 KB Output is correct
10 Correct 71 ms 33100 KB Output is correct
11 Correct 71 ms 33072 KB Output is correct
12 Correct 69 ms 33092 KB Output is correct
13 Correct 72 ms 33100 KB Output is correct
14 Correct 74 ms 33136 KB Output is correct
15 Correct 85 ms 33116 KB Output is correct
16 Correct 71 ms 33108 KB Output is correct
17 Correct 71 ms 33152 KB Output is correct
18 Correct 70 ms 33100 KB Output is correct
19 Correct 70 ms 33192 KB Output is correct
20 Correct 71 ms 33176 KB Output is correct
21 Correct 74 ms 33228 KB Output is correct
22 Correct 102 ms 33452 KB Output is correct
23 Correct 144 ms 33596 KB Output is correct
24 Correct 95 ms 33356 KB Output is correct
25 Correct 150 ms 33564 KB Output is correct
26 Correct 144 ms 33604 KB Output is correct
27 Correct 74 ms 33116 KB Output is correct
28 Correct 73 ms 33092 KB Output is correct
29 Correct 73 ms 33092 KB Output is correct
30 Correct 145 ms 33636 KB Output is correct
31 Correct 145 ms 33684 KB Output is correct
32 Correct 72 ms 33136 KB Output is correct
33 Correct 72 ms 33208 KB Output is correct
34 Correct 146 ms 33604 KB Output is correct
35 Execution timed out 1092 ms 38516 KB Time limit exceeded
36 Halted 0 ms 0 KB -