oj.uz

Submission #1063589

# Submission time Handle Problem Language Result Execution time Memory
1063589 2024-08-17T21:01:56 Z oscar1f Sparklers (JOI17_sparklers) C++17
50 / 100
 30 ms 15452 KB 
#include<bits/stdc++.h>
using namespace std;

#define int long long

const int TAILLE_MAX=1000+5,INFINI=1000*1000*1000;
int nbVal,posInit,tempsInit;
int val[TAILLE_MAX];
int dv[TAILLE_MAX][TAILLE_MAX],pb[TAILLE_MAX][TAILLE_MAX];

vector<int> calcCumu(vector<int> v) {
    vector<int> ans={0};
    int somCour=0;
    for (int i:v) {
        somCour+=i;
        ans.push_back(somCour);
    }
    return ans;
}

void DFS(int lig,int col) {
    if (pb[lig][col]==0 and dv[lig][col]==0) {
        dv[lig][col]=1;
        DFS(lig+1,col);
        DFS(lig,col+1);
    }
} 

bool verif(int temps) {
    //cout<<temps<<endl;
    vector<int> listeGau,listeDro;
    for (int i=posInit;i>1;i--) {
        listeGau.push_back(2*temps-val[i]+val[i-1]);
    }
    for (int i=posInit+1;i<=nbVal;i++) {
        listeDro.push_back(2*temps-val[i]+val[i-1]);
    }
    vector<int> cumuGau=calcCumu(listeGau),cumuDro=calcCumu(listeDro);
    int tailleGau=cumuGau.size(),tailleDro=cumuDro.size();
    for (int i=0;i<=tailleGau;i++) {
        for (int j=0;j<=tailleDro;j++) {
            pb[i][j]=1;
            dv[i][j]=0;
        }
    }
    for (int i=0;i<tailleGau;i++) {
        for (int j=0;j<tailleDro;j++) {
            if (cumuGau[i]+cumuDro[j]>=0) {
                pb[i][j]=0;
            }
        }
    }
    /*for (int i:cumuGau) {
        for (int j:cumuDro) {
            if (i+j>=0) {
                cout<<1<<" ";
            }
            else {
                cout<<0<<" ";
            }
        }
        cout<<endl;
    } 
    cout<<endl;*/
    DFS(0,0);
    return (dv[tailleGau-1][tailleDro-1]==1);
}

signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    cin>>nbVal>>posInit>>tempsInit;
    for (int i=1;i<=nbVal;i++) {
        cin>>val[i];
    }
    int deb=0,fin=INFINI,mid;
    while (deb!=fin) {
        mid=(deb+fin)/2;
        if (verif(mid)) {
            fin=mid;
        }
        else {
            deb=mid+1;
        }
    }
    cout<<(deb+tempsInit-1)/tempsInit<<endl;
    return 0;
}

Subtask #1
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 0 ms 2396 KB Output is correct
6 Correct 1 ms 2516 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 0 ms 2396 KB Output is correct
9 Correct 0 ms 2396 KB Output is correct
10 Correct 0 ms 2488 KB Output is correct
11 Correct 1 ms 2392 KB Output is correct
12 Correct 0 ms 2396 KB Output is correct
13 Correct 0 ms 2396 KB Output is correct
14 Correct 0 ms 2396 KB Output is correct
15 Correct 0 ms 2396 KB Output is correct
16 Correct 0 ms 2396 KB Output is correct
17 Correct 0 ms 2396 KB Output is correct
18 Correct 0 ms 2396 KB Output is correct
19 Correct 0 ms 2512 KB Output is correct
20 Correct 0 ms 2396 KB Output is correct
21 Correct 0 ms 2396 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 0 ms 2396 KB Output is correct
6 Correct 1 ms 2516 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 0 ms 2396 KB Output is correct
9 Correct 0 ms 2396 KB Output is correct
10 Correct 0 ms 2488 KB Output is correct
11 Correct 1 ms 2392 KB Output is correct
12 Correct 0 ms 2396 KB Output is correct
13 Correct 0 ms 2396 KB Output is correct
14 Correct 0 ms 2396 KB Output is correct
15 Correct 0 ms 2396 KB Output is correct
16 Correct 0 ms 2396 KB Output is correct
17 Correct 0 ms 2396 KB Output is correct
18 Correct 0 ms 2396 KB Output is correct
19 Correct 0 ms 2512 KB Output is correct
20 Correct 0 ms 2396 KB Output is correct
21 Correct 0 ms 2396 KB Output is correct
22 Correct 12 ms 6744 KB Output is correct
23 Correct 8 ms 6748 KB Output is correct
24 Correct 4 ms 4700 KB Output is correct
25 Correct 2 ms 2652 KB Output is correct
26 Correct 13 ms 6748 KB Output is correct
27 Correct 15 ms 6748 KB Output is correct
28 Correct 24 ms 14940 KB Output is correct
29 Correct 23 ms 14940 KB Output is correct
30 Correct 17 ms 14936 KB Output is correct
31 Correct 20 ms 14940 KB Output is correct
32 Correct 25 ms 10980 KB Output is correct
33 Correct 26 ms 11096 KB Output is correct
34 Correct 14 ms 14940 KB Output is correct
35 Correct 24 ms 14940 KB Output is correct
36 Correct 9 ms 6744 KB Output is correct
37 Correct 8 ms 6748 KB Output is correct
38 Correct 25 ms 15032 KB Output is correct
39 Correct 8 ms 15452 KB Output is correct
40 Correct 30 ms 10844 KB Output is correct

Subtask #3
0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 0 ms 2396 KB Output is correct
6 Correct 1 ms 2516 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 0 ms 2396 KB Output is correct
9 Correct 0 ms 2396 KB Output is correct
10 Correct 0 ms 2488 KB Output is correct
11 Correct 1 ms 2392 KB Output is correct
12 Correct 0 ms 2396 KB Output is correct
13 Correct 0 ms 2396 KB Output is correct
14 Correct 0 ms 2396 KB Output is correct
15 Correct 0 ms 2396 KB Output is correct
16 Correct 0 ms 2396 KB Output is correct
17 Correct 0 ms 2396 KB Output is correct
18 Correct 0 ms 2396 KB Output is correct
19 Correct 0 ms 2512 KB Output is correct
20 Correct 0 ms 2396 KB Output is correct
21 Correct 0 ms 2396 KB Output is correct
22 Correct 12 ms 6744 KB Output is correct
23 Correct 8 ms 6748 KB Output is correct
24 Correct 4 ms 4700 KB Output is correct
25 Correct 2 ms 2652 KB Output is correct
26 Correct 13 ms 6748 KB Output is correct
27 Correct 15 ms 6748 KB Output is correct
28 Correct 24 ms 14940 KB Output is correct
29 Correct 23 ms 14940 KB Output is correct
30 Correct 17 ms 14936 KB Output is correct
31 Correct 20 ms 14940 KB Output is correct
32 Correct 25 ms 10980 KB Output is correct
33 Correct 26 ms 11096 KB Output is correct
34 Correct 14 ms 14940 KB Output is correct
35 Correct 24 ms 14940 KB Output is correct
36 Correct 9 ms 6744 KB Output is correct
37 Correct 8 ms 6748 KB Output is correct
38 Correct 25 ms 15032 KB Output is correct
39 Correct 8 ms 15452 KB Output is correct
40 Correct 30 ms 10844 KB Output is correct
41 Runtime error 1 ms 604 KB Execution killed with signal 11
42 Halted 0 ms 0 KB -