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Submission #850554

# Submission time Handle Problem Language Result Execution time Memory
850554 2023-09-16T21:54:27 Z oscar1f Monochrome Points (JOI20_monochrome) C++17
35 / 100
 2000 ms 14556 KB 
#include<bits/stdc++.h>
using namespace std;

#define int long long

const int MAX_VAL=200*1000+5;
int nbVal;
vector<int> initType;
string valDeb;
int cumu[MAX_VAL];

int calc(vector<int> typeSom) {
    int rep=0;
    vector<int> listeBla,listeNoir;
    for (int i=0;i<2*nbVal;i++) {
        if (typeSom[i]==0) {
            listeBla.push_back(i);
        }
        else {
            listeNoir.push_back(i);
        }
    }
    for (int j=0;j<nbVal;j++) {
        cumu[j]=-nbVal;
    }
    int deb,fin,mid,premSup;
    for (int i=0;i<nbVal;i++) {
        deb=0;
        fin=nbVal;
        while (deb!=fin) {
            mid=(deb+fin)/2;
            if (listeNoir[mid]<listeBla[i]) {
                deb=mid+1;
            } 
            else {
                fin=mid;
            }
        }
        premSup=deb;
        if (premSup>0) {
            deb=0;
            fin=premSup;
            while (deb!=fin) {
                mid=(deb+fin)/2;
                if (listeBla[i]-listeNoir[mid]<nbVal) {
                    fin=mid;
                }
                else {
                    deb=mid+1;
                }
            }
            for (int j=0;j<deb;j++) {
                cumu[(j-i+nbVal)%nbVal]+=2*nbVal-listeBla[i];
            }
            for (int j=deb;j<premSup;j++) {
                cumu[(j-i+nbVal)%nbVal]+=listeBla[i];
            }
        }
        if (premSup<nbVal) {
            deb=premSup;
            fin=nbVal;
            while (deb!=fin) {
                mid=(deb+fin)/2;
                if (listeNoir[mid]-listeBla[i]>=nbVal) {
                    fin=mid;
                }
                else {
                    deb=mid+1;
                }
            }
            for (int j=premSup;j<deb;j++) {
                cumu[(j-i+nbVal)%nbVal]-=listeBla[i];
            }
            for (int j=deb;j<nbVal;j++) {
                cumu[(j-i+nbVal)%nbVal]+=listeBla[i];
            }
        }
    }
    for (int i=0;i<nbVal;i++) {
        deb=0;
        fin=nbVal;
        while (deb!=fin) {
            mid=(deb+fin)/2;
            if (listeBla[mid]<listeNoir[i]) {
                deb=mid+1;
            } 
            else {
                fin=mid;
            }
        }
        premSup=deb;
        if (premSup>0) {
            deb=0;
            fin=premSup;
            while (deb!=fin) {
                mid=(deb+fin)/2;
                if (listeNoir[i]-listeBla[mid]<nbVal) {
                    fin=mid;
                }
                else {
                    deb=mid+1;
                }
            }
            for (int j=0;j<deb;j++) {
                cumu[(i-j+nbVal)%nbVal]+=2*nbVal-listeNoir[i];
            }
            for (int j=deb;j<premSup;j++) {
                cumu[(i-j+nbVal)%nbVal]+=listeNoir[i];
            }
        }
        if (premSup<nbVal) {
            deb=premSup;
            fin=nbVal;
            while (deb!=fin) {
                mid=(deb+fin)/2;
                if (listeBla[mid]-listeNoir[i]>=nbVal) {
                    fin=mid;
                }
                else {
                    deb=mid+1;
                }
            }
            for (int j=premSup;j<deb;j++) {
                cumu[(i-j+nbVal)%nbVal]-=listeNoir[i];
            }
            for (int j=deb;j<nbVal;j++) {
                cumu[(i-j+nbVal)%nbVal]+=listeNoir[i];
            }
        }
    }
    for (int j=0;j<nbVal;j++) {
        rep=max(rep,cumu[j]/2);
    }
    return rep;
}

signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    cin>>nbVal;
    cin>>valDeb;
    for (int i=0;i<2*nbVal;i++) {
        if (valDeb[i]=='W') {
            initType.push_back(0);
        }
        else {
            initType.push_back(1);
        }
    }
    cout<<calc(initType)<<endl;
    return 0;
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 600 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 344 KB Output is correct

Subtask #2
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 600 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 2 ms 344 KB Output is correct
16 Correct 1 ms 600 KB Output is correct
17 Correct 2 ms 344 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 344 KB Output is correct
20 Correct 1 ms 344 KB Output is correct
21 Correct 1 ms 344 KB Output is correct
22 Correct 1 ms 344 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 344 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 344 KB Output is correct
27 Correct 1 ms 344 KB Output is correct
28 Correct 1 ms 344 KB Output is correct
29 Correct 1 ms 344 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 1 ms 344 KB Output is correct
32 Correct 2 ms 344 KB Output is correct
33 Correct 1 ms 344 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 600 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 2 ms 344 KB Output is correct
16 Correct 1 ms 600 KB Output is correct
17 Correct 2 ms 344 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 344 KB Output is correct
20 Correct 1 ms 344 KB Output is correct
21 Correct 1 ms 344 KB Output is correct
22 Correct 1 ms 344 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 344 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 344 KB Output is correct
27 Correct 1 ms 344 KB Output is correct
28 Correct 1 ms 344 KB Output is correct
29 Correct 1 ms 344 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 1 ms 344 KB Output is correct
32 Correct 2 ms 344 KB Output is correct
33 Correct 1 ms 344 KB Output is correct
34 Correct 35 ms 572 KB Output is correct
35 Correct 35 ms 600 KB Output is correct
36 Correct 33 ms 344 KB Output is correct
37 Correct 31 ms 344 KB Output is correct
38 Correct 30 ms 344 KB Output is correct
39 Correct 33 ms 344 KB Output is correct
40 Correct 29 ms 344 KB Output is correct
41 Correct 26 ms 344 KB Output is correct
42 Correct 34 ms 344 KB Output is correct
43 Correct 36 ms 344 KB Output is correct
44 Correct 30 ms 576 KB Output is correct
45 Correct 32 ms 348 KB Output is correct
46 Correct 34 ms 600 KB Output is correct
47 Correct 34 ms 348 KB Output is correct
48 Correct 35 ms 344 KB Output is correct
49 Correct 29 ms 344 KB Output is correct
50 Correct 35 ms 568 KB Output is correct
51 Correct 35 ms 592 KB Output is correct
52 Correct 35 ms 348 KB Output is correct

Subtask #4
0.0 / 65.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 600 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 2 ms 344 KB Output is correct
16 Correct 1 ms 600 KB Output is correct
17 Correct 2 ms 344 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 344 KB Output is correct
20 Correct 1 ms 344 KB Output is correct
21 Correct 1 ms 344 KB Output is correct
22 Correct 1 ms 344 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 344 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 344 KB Output is correct
27 Correct 1 ms 344 KB Output is correct
28 Correct 1 ms 344 KB Output is correct
29 Correct 1 ms 344 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 1 ms 344 KB Output is correct
32 Correct 2 ms 344 KB Output is correct
33 Correct 1 ms 344 KB Output is correct
34 Correct 35 ms 572 KB Output is correct
35 Correct 35 ms 600 KB Output is correct
36 Correct 33 ms 344 KB Output is correct
37 Correct 31 ms 344 KB Output is correct
38 Correct 30 ms 344 KB Output is correct
39 Correct 33 ms 344 KB Output is correct
40 Correct 29 ms 344 KB Output is correct
41 Correct 26 ms 344 KB Output is correct
42 Correct 34 ms 344 KB Output is correct
43 Correct 36 ms 344 KB Output is correct
44 Correct 30 ms 576 KB Output is correct
45 Correct 32 ms 348 KB Output is correct
46 Correct 34 ms 600 KB Output is correct
47 Correct 34 ms 348 KB Output is correct
48 Correct 35 ms 344 KB Output is correct
49 Correct 29 ms 344 KB Output is correct
50 Correct 35 ms 568 KB Output is correct
51 Correct 35 ms 592 KB Output is correct
52 Correct 35 ms 348 KB Output is correct
53 Execution timed out 2028 ms 14556 KB Time limit exceeded
54 Halted 0 ms 0 KB -