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답안 #284960

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
284960 2020-08-28T08:29:11 Z achibasadzishvili Discharging (NOI20_discharging) C++17
36 / 100
 1000 ms 221264 KB 
#include<bits/stdc++.h>
#pragma GCC optimize("Ofast")
#pragma GCC target("avx2,fma")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#pragma GCC optimization ("O3")
#pragma GCC optimization ("unroll-loops")
#define ll long long
#define f first
#define s second
#define pb push_back
using namespace std;
ll n,a[1000002];
ll dp[1000002],rm[1000002][21],po[2000002],pw[200],raod,mn;
ll lef[1000002],rig[1000002];
vector<ll>del[1000002];
ll get(ll x,ll y){
    ll lo = po[y - x + 1];
    if(rm[y][lo] > rm[x + pw[lo] - 1][lo])return rm[y][lo];
    return rm[x + pw[lo] - 1][lo];
}
ll ind(ll x,ll y){
    if(y == n)return -1;
    ll l = y + 1,r = n,mid,ind = -1;
    while(r >= l){
        mid = (l + r) / 2;
        if(dp[x] + get(x + 1 , mid) * (n - x) >= dp[y] + get(y + 1 , mid) * (n - y)){
            r = mid - 1;
            ind = mid;
        }
        else
            l = mid + 1;
    }
    return ind;
}
void delet(ll x){
    if(lef[x] == rig[x] && lef[x] == -1)return;
    if(lef[x] == -1){
        lef[rig[x]] = -1;
        mn = rig[x];
        rig[x] = -1;
        return;
    }
    rig[lef[x]] = rig[x];
    lef[rig[x]] = lef[x];
    ll cur = ind(lef[x] , rig[x]);
    if(cur == -1){
        lef[x] = rig[x] = -1;
        return;
    }
    del[cur].pb(lef[x]);
    lef[x] = rig[x] = -1;
}
int main(){
    scanf("%d",&n);
    for(int i=1; i<=n; i++){
        scanf("%d",&a[i]);
    }
    int cl = clock();
    //n = 1000000;
    //for(int i=1; i<=n; i++)
    //    a[i] = n-i+1;
    pw[0] = 1;
    
    for(int i=1; i<=21; i++){
        pw[i] = pw[i - 1] * 2;
        for(int j=pw[i - 1]; j<pw[i]; j++){
            if(j <= 1000000)
                po[j] = i - 1;
        }
    }
    for(int i=0; i<=n; i++)
        lef[i] = rig[i] = -1;
    for(int i=1; i<=n; i++){
        rm[i][0] = a[i];
        for(int j=1; j<=20; j++){
            if(i - pw[j] + 1 >= 1)
                rm[i][j] = max(rm[i][j - 1] , rm[i - pw[j - 1]][j - 1]);
        }
    }
    //cout << clock() - cl << '\n';
    for(int i=1; i<=n; i++){
        for(int j=0; j<del[i].size(); j++){
            delet(del[i][j]);
        }
        ll in = 0,mx=0;
        dp[i] = 100000000000000;
        for(int j=i; j>=1; j--){
            mx = max(mx , a[j]);
            if(dp[j - 1] + mx * (n - j + 1) < dp[i]){
                in = j - 1;
                dp[i] = min(dp[i] , dp[j - 1] + mx * (n - j + 1));
            }
        }
        dp[i] = dp[mn] + get(mn + 1 , i) * (n - mn);
        rig[i - 1] = i;
        lef[i] = i - 1;
        ll cur = ind(i - 1 , i);
        if(cur != -1)
            del[cur].pb(i - 1);
    }
    //cout << "time: " << clock() - cl << " " << raod << '\n';
    cout << dp[n];
    
    
    return 0;
}

Compilation message

Discharging.cpp:5: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas]
    5 | #pragma GCC optimization ("O3")
      | 
Discharging.cpp:6: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas]
    6 | #pragma GCC optimization ("unroll-loops")
      | 
Discharging.cpp: In function 'int main()':
Discharging.cpp:54:13: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long long int*' [-Wformat=]
   54 |     scanf("%d",&n);
      |            ~^  ~~
      |             |  |
      |             |  long long int*
      |             int*
      |            %lld
Discharging.cpp:56:17: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long long int*' [-Wformat=]
   56 |         scanf("%d",&a[i]);
      |                ~^  ~~~~~
      |                 |  |
      |                 |  long long int*
      |                 int*
      |                %lld
Discharging.cpp:82:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   82 |         for(int j=0; j<del[i].size(); j++){
      |                      ~^~~~~~~~~~~~~~
Discharging.cpp:85:12: warning: variable 'in' set but not used [-Wunused-but-set-variable]
   85 |         ll in = 0,mx=0;
      |            ^~
Discharging.cpp:58:9: warning: unused variable 'cl' [-Wunused-variable]
   58 |     int cl = clock();
      |         ^~
Discharging.cpp:54:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   54 |     scanf("%d",&n);
      |     ~~~~~^~~~~~~~~
Discharging.cpp:56:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   56 |         scanf("%d",&a[i]);
      |         ~~~~~^~~~~~~~~~~~

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 21 ms 31616 KB Output is correct
2 Correct 21 ms 31616 KB Output is correct
3 Correct 21 ms 31616 KB Output is correct
4 Correct 20 ms 31616 KB Output is correct
5 Correct 22 ms 31744 KB Output is correct
6 Correct 21 ms 31616 KB Output is correct
7 Correct 22 ms 31752 KB Output is correct
8 Correct 20 ms 31616 KB Output is correct
9 Correct 20 ms 31616 KB Output is correct
10 Correct 21 ms 31616 KB Output is correct
11 Correct 20 ms 31616 KB Output is correct
12 Correct 21 ms 31616 KB Output is correct
13 Correct 20 ms 31616 KB Output is correct
14 Correct 20 ms 31616 KB Output is correct

Subtask #2
13.0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 23 ms 32000 KB Output is correct
2 Correct 23 ms 32000 KB Output is correct
3 Correct 22 ms 32000 KB Output is correct
4 Correct 27 ms 32000 KB Output is correct
5 Correct 23 ms 32000 KB Output is correct
6 Correct 23 ms 32000 KB Output is correct
7 Correct 23 ms 32000 KB Output is correct
8 Correct 23 ms 32000 KB Output is correct
9 Correct 23 ms 32000 KB Output is correct
10 Correct 23 ms 32000 KB Output is correct
11 Correct 24 ms 31992 KB Output is correct
12 Correct 24 ms 32000 KB Output is correct
13 Correct 23 ms 32000 KB Output is correct
14 Correct 26 ms 32000 KB Output is correct
15 Correct 26 ms 32000 KB Output is correct

Subtask #3
0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 23 ms 32000 KB Output is correct
2 Correct 23 ms 32000 KB Output is correct
3 Correct 22 ms 32000 KB Output is correct
4 Correct 27 ms 32000 KB Output is correct
5 Correct 23 ms 32000 KB Output is correct
6 Correct 23 ms 32000 KB Output is correct
7 Correct 23 ms 32000 KB Output is correct
8 Correct 23 ms 32000 KB Output is correct
9 Correct 23 ms 32000 KB Output is correct
10 Correct 23 ms 32000 KB Output is correct
11 Correct 24 ms 31992 KB Output is correct
12 Correct 24 ms 32000 KB Output is correct
13 Correct 23 ms 32000 KB Output is correct
14 Correct 26 ms 32000 KB Output is correct
15 Correct 26 ms 32000 KB Output is correct
16 Execution timed out 1097 ms 221264 KB Time limit exceeded
17 Halted 0 ms 0 KB -

Subtask #4
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1103 ms 221036 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 21 ms 31616 KB Output is correct
2 Correct 21 ms 31616 KB Output is correct
3 Correct 21 ms 31616 KB Output is correct
4 Correct 20 ms 31616 KB Output is correct
5 Correct 22 ms 31744 KB Output is correct
6 Correct 21 ms 31616 KB Output is correct
7 Correct 22 ms 31752 KB Output is correct
8 Correct 20 ms 31616 KB Output is correct
9 Correct 20 ms 31616 KB Output is correct
10 Correct 21 ms 31616 KB Output is correct
11 Correct 20 ms 31616 KB Output is correct
12 Correct 21 ms 31616 KB Output is correct
13 Correct 20 ms 31616 KB Output is correct
14 Correct 20 ms 31616 KB Output is correct
15 Correct 23 ms 32000 KB Output is correct
16 Correct 23 ms 32000 KB Output is correct
17 Correct 22 ms 32000 KB Output is correct
18 Correct 27 ms 32000 KB Output is correct
19 Correct 23 ms 32000 KB Output is correct
20 Correct 23 ms 32000 KB Output is correct
21 Correct 23 ms 32000 KB Output is correct
22 Correct 23 ms 32000 KB Output is correct
23 Correct 23 ms 32000 KB Output is correct
24 Correct 23 ms 32000 KB Output is correct
25 Correct 24 ms 31992 KB Output is correct
26 Correct 24 ms 32000 KB Output is correct
27 Correct 23 ms 32000 KB Output is correct
28 Correct 26 ms 32000 KB Output is correct
29 Correct 26 ms 32000 KB Output is correct
30 Correct 25 ms 32000 KB Output is correct
31 Correct 27 ms 31908 KB Output is correct
32 Correct 23 ms 32000 KB Output is correct
33 Correct 22 ms 32000 KB Output is correct
34 Correct 23 ms 32000 KB Output is correct
35 Correct 23 ms 32000 KB Output is correct
36 Correct 23 ms 32000 KB Output is correct
37 Correct 23 ms 32000 KB Output is correct
38 Correct 23 ms 31992 KB Output is correct
39 Correct 23 ms 32000 KB Output is correct
40 Correct 23 ms 31992 KB Output is correct
41 Correct 23 ms 31992 KB Output is correct
42 Correct 23 ms 32000 KB Output is correct
43 Correct 23 ms 32000 KB Output is correct
44 Correct 23 ms 32000 KB Output is correct
45 Correct 23 ms 32000 KB Output is correct
46 Correct 23 ms 32000 KB Output is correct
47 Correct 23 ms 32000 KB Output is correct
48 Correct 23 ms 32000 KB Output is correct
49 Correct 22 ms 32000 KB Output is correct
50 Correct 23 ms 32000 KB Output is correct

Subtask #6
0 / 28.0

# 결과 실행 시간 메모리 Grader output
1 Correct 21 ms 31616 KB Output is correct
2 Correct 21 ms 31616 KB Output is correct
3 Correct 21 ms 31616 KB Output is correct
4 Correct 20 ms 31616 KB Output is correct
5 Correct 22 ms 31744 KB Output is correct
6 Correct 21 ms 31616 KB Output is correct
7 Correct 22 ms 31752 KB Output is correct
8 Correct 20 ms 31616 KB Output is correct
9 Correct 20 ms 31616 KB Output is correct
10 Correct 21 ms 31616 KB Output is correct
11 Correct 20 ms 31616 KB Output is correct
12 Correct 21 ms 31616 KB Output is correct
13 Correct 20 ms 31616 KB Output is correct
14 Correct 20 ms 31616 KB Output is correct
15 Correct 23 ms 32000 KB Output is correct
16 Correct 23 ms 32000 KB Output is correct
17 Correct 22 ms 32000 KB Output is correct
18 Correct 27 ms 32000 KB Output is correct
19 Correct 23 ms 32000 KB Output is correct
20 Correct 23 ms 32000 KB Output is correct
21 Correct 23 ms 32000 KB Output is correct
22 Correct 23 ms 32000 KB Output is correct
23 Correct 23 ms 32000 KB Output is correct
24 Correct 23 ms 32000 KB Output is correct
25 Correct 24 ms 31992 KB Output is correct
26 Correct 24 ms 32000 KB Output is correct
27 Correct 23 ms 32000 KB Output is correct
28 Correct 26 ms 32000 KB Output is correct
29 Correct 26 ms 32000 KB Output is correct
30 Execution timed out 1097 ms 221264 KB Time limit exceeded
31 Halted 0 ms 0 KB -