oj.uz

답안 #577959

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
577959 2022-06-15T15:06:47 Z perchuts Mountains (IOI17_mountains) C++17
20 / 100
 1 ms 468 KB 
#include <bits/stdc++.h>
#define all(x) x.begin(), x.end()
#define sz(x) (int) x.size()
#define endl '\n'
#define pb push_back
#define _ ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);

using namespace std;

using ll = long long;
using ull = unsigned long long;
using ii = pair<int,int>;
using iii = tuple<int,int,int>;

const int inf = 2e9+1;
const int mod = 1e9+7;
const int maxn = 1e5+100;

template<typename X, typename Y> bool ckmin(X& x, const Y& y) { return (y < x) ? (x=y,1):0; }
template<typename X, typename Y> bool ckmax(X& x, const Y& y) { return (x < y) ? (x=y,1):0; }

int dp[2001][2001], y[2001];
bool pode[2001][2001];

int solve(int l,int r){//dp[l][r] => as pontas sao (l,r).
    if(pode[l][r]==0)return 0;
    if(dp[l][r])return dp[l][r];
    int best = 2;
    for(int k=l+1;k<=r-1;++k){
        if(pode[l][k]&&pode[k][r])ckmax(best,solve(l,k)+solve(k,r)-1);
    }
    return dp[l][r] = best;
}

int maximum_deevs(vector<int>v){
    int n = sz(v);
    for(int i=0;i<n;++i){
        y[i+1] = v[i];
        ll bx = 0, by = 0;
        for(int j=i+1;j<n;++j){
            if(bx*ll(v[j]-v[i])<by*ll(j-i))pode[i+1][j+1] = 1;
            else bx = ll(j-i), by = ll(v[j]-v[i]);
        }
    }
    ll ans = 1;//posso conseguir pegar so 1
    for(int l=1;l<=n;++l){
        for(int r=l+2;r<=n;++r){
            ckmax(ans,solve(l,r));
        }
    }
    return ans;
}

// int main(){
//     int n;cin>>n;
//     vector<int>v(n);
//     for(auto&x :v)cin>>x;
//     cout<<maximum_deevs(v)<<endl;
// }

Subtask #1
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 300 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 308 KB Output is correct
15 Correct 1 ms 312 KB Output is correct
16 Correct 1 ms 340 KB Output is correct

Subtask #2
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 300 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 308 KB Output is correct
15 Correct 1 ms 312 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Incorrect 1 ms 468 KB Output isn't correct
18 Halted 0 ms 0 KB -

Subtask #3
0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 300 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 308 KB Output is correct
15 Correct 1 ms 312 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Incorrect 1 ms 468 KB Output isn't correct
18 Halted 0 ms 0 KB -

Subtask #4
0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 300 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 308 KB Output is correct
15 Correct 1 ms 312 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Incorrect 1 ms 468 KB Output isn't correct
18 Halted 0 ms 0 KB -