oj.uz

Submission #889326

# Submission time Handle Problem Language Result Execution time Memory
889326 2023-12-19T11:13:13 Z alexander707070 Dango Maker (JOI18_dango_maker) C++14
33 / 100
 2000 ms 262144 KB 
#include<bits/stdc++.h>
#define MAXN 6000007
using namespace std;

struct edge{
    int to,flow,cap,rev;
};

int n,m;
char t[3007][3007];

vector<edge> v[MAXN];
int s[MAXN],cnt1,cnt2,ans;
int num[3007][3007],num2[3007][3007],total;

int flow,maxflow,source,sink;
int li[MAXN],tim;

void add_edge(int from,int to){
    v[from].push_back({to,0,1,int(v[to].size())});
    v[to].push_back({from,0,0,int(v[from].size())-1});
}

int dfs(int x,int mins){
    if(x==sink)return mins;

    li[x]=tim;
    for(int i=0;i<v[x].size();i++){
        if(li[v[x][i].to]==tim or v[x][i].cap-v[x][i].flow<=0)continue;
        int curr=dfs(v[x][i].to,1);

        if(curr>0){
            v[x][i].flow+=curr;
            v[v[x][i].to][v[x][i].rev].flow-=curr;
            return curr;
        }
    }

    return 0;
}

int main(){

    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    cin>>n>>m;

    for(int i=0;i<=n+1;i++){
        for(int f=0;f<=m+1;f++){
            t[i][f]='#';
        }
    }

    for(int i=1;i<=n;i++){
        for(int f=1;f<=m;f++){
            cin>>t[i][f];
        }
    }

    source=0; sink=2*n*m;

    for(int i=1;i<=n;i++){
        for(int f=1;f<=m;f++){

            if(t[i][f]=='R' and t[i][f+1]=='G' and t[i][f+2]=='W'){
                total++; num[i][f]=total;
                add_edge(source,total);
            }
            if(t[i][f]=='R' and t[i+1][f]=='G' and t[i+2][f]=='W'){
                total++; num2[i][f]=total;
                add_edge(total,sink);
            }

            if(t[i][f]=='R' and t[i][f+1]=='G' and t[i][f+2]=='W' and t[i+1][f]=='G' and t[i+2][f]=='W'){
                add_edge(num[i][f],num2[i][f]);
            }
        }
    }

    for(int i=1;i<=n;i++){
        for(int f=1;f<=m;f++){
            if(t[i][f]=='G' and t[i][f-1]=='R' and t[i][f+1]=='W' and t[i-1][f]=='R' and t[i+1][f]=='W'){
                add_edge(num[i][f-1],num2[i-1][f]);
            }
        }
    }

    for(int i=2;i<=n;i++){
        for(int f=2;f<=m;f++){
            if(t[i][f]=='W' and t[i][f-2]=='R' and t[i][f-1]=='G' and t[i-2][f]=='R' and t[i-1][f]=='G'){
                add_edge(num[i][f-2],num2[i-2][f]);
            }
        }
    }

    while(true){
        tim++;
        flow=dfs(source,1);
        if(flow==0)break;
        maxflow+=flow;
    }

    cout<<total-maxflow<<"\n";

    return 0;
}

Compilation message

dango_maker.cpp: In function 'int dfs(int, int)':
dango_maker.cpp:28:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<edge>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |     for(int i=0;i<v[x].size();i++){
      |                 ~^~~~~~~~~~~~

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 30 ms 143964 KB Output is correct
2 Correct 30 ms 143840 KB Output is correct
3 Correct 30 ms 143952 KB Output is correct
4 Correct 30 ms 143976 KB Output is correct
5 Correct 30 ms 143960 KB Output is correct
6 Correct 31 ms 146000 KB Output is correct
7 Correct 32 ms 146008 KB Output is correct
8 Correct 31 ms 146092 KB Output is correct
9 Correct 33 ms 146000 KB Output is correct
10 Correct 32 ms 143952 KB Output is correct
11 Correct 35 ms 146004 KB Output is correct
12 Correct 31 ms 146008 KB Output is correct
13 Correct 31 ms 146008 KB Output is correct
14 Correct 31 ms 143964 KB Output is correct
15 Correct 31 ms 144024 KB Output is correct
16 Correct 30 ms 143952 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 30 ms 143964 KB Output is correct
2 Correct 30 ms 143840 KB Output is correct
3 Correct 30 ms 143952 KB Output is correct
4 Correct 30 ms 143976 KB Output is correct
5 Correct 30 ms 143960 KB Output is correct
6 Correct 31 ms 146000 KB Output is correct
7 Correct 32 ms 146008 KB Output is correct
8 Correct 31 ms 146092 KB Output is correct
9 Correct 33 ms 146000 KB Output is correct
10 Correct 32 ms 143952 KB Output is correct
11 Correct 35 ms 146004 KB Output is correct
12 Correct 31 ms 146008 KB Output is correct
13 Correct 31 ms 146008 KB Output is correct
14 Correct 31 ms 143964 KB Output is correct
15 Correct 31 ms 144024 KB Output is correct
16 Correct 30 ms 143952 KB Output is correct
17 Correct 35 ms 146000 KB Output is correct
18 Correct 31 ms 145976 KB Output is correct
19 Correct 33 ms 146080 KB Output is correct
20 Correct 35 ms 146260 KB Output is correct
21 Correct 31 ms 146124 KB Output is correct
22 Correct 31 ms 146012 KB Output is correct
23 Correct 31 ms 146008 KB Output is correct
24 Correct 31 ms 146012 KB Output is correct
25 Correct 30 ms 143968 KB Output is correct
26 Correct 31 ms 143964 KB Output is correct
27 Correct 31 ms 146012 KB Output is correct
28 Correct 30 ms 146012 KB Output is correct
29 Correct 31 ms 146000 KB Output is correct
30 Correct 30 ms 144076 KB Output is correct
31 Correct 31 ms 143964 KB Output is correct
32 Correct 31 ms 143964 KB Output is correct
33 Correct 31 ms 146012 KB Output is correct
34 Correct 31 ms 146012 KB Output is correct
35 Correct 30 ms 146008 KB Output is correct
36 Correct 31 ms 146012 KB Output is correct
37 Correct 31 ms 146104 KB Output is correct
38 Correct 31 ms 146012 KB Output is correct
39 Correct 33 ms 146080 KB Output is correct
40 Correct 32 ms 146012 KB Output is correct
41 Correct 31 ms 146012 KB Output is correct
42 Correct 34 ms 146268 KB Output is correct
43 Correct 32 ms 146012 KB Output is correct
44 Correct 31 ms 146012 KB Output is correct
45 Correct 32 ms 146012 KB Output is correct
46 Correct 33 ms 146012 KB Output is correct
47 Correct 31 ms 146012 KB Output is correct
48 Correct 31 ms 146012 KB Output is correct
49 Correct 32 ms 146012 KB Output is correct
50 Correct 34 ms 146004 KB Output is correct
51 Correct 31 ms 146156 KB Output is correct
52 Correct 31 ms 146012 KB Output is correct
53 Correct 30 ms 146024 KB Output is correct

Subtask #3
0 / 67.0

# Verdict Execution time Memory Grader output
1 Correct 30 ms 143964 KB Output is correct
2 Correct 30 ms 143840 KB Output is correct
3 Correct 30 ms 143952 KB Output is correct
4 Correct 30 ms 143976 KB Output is correct
5 Correct 30 ms 143960 KB Output is correct
6 Correct 31 ms 146000 KB Output is correct
7 Correct 32 ms 146008 KB Output is correct
8 Correct 31 ms 146092 KB Output is correct
9 Correct 33 ms 146000 KB Output is correct
10 Correct 32 ms 143952 KB Output is correct
11 Correct 35 ms 146004 KB Output is correct
12 Correct 31 ms 146008 KB Output is correct
13 Correct 31 ms 146008 KB Output is correct
14 Correct 31 ms 143964 KB Output is correct
15 Correct 31 ms 144024 KB Output is correct
16 Correct 30 ms 143952 KB Output is correct
17 Correct 35 ms 146000 KB Output is correct
18 Correct 31 ms 145976 KB Output is correct
19 Correct 33 ms 146080 KB Output is correct
20 Correct 35 ms 146260 KB Output is correct
21 Correct 31 ms 146124 KB Output is correct
22 Correct 31 ms 146012 KB Output is correct
23 Correct 31 ms 146008 KB Output is correct
24 Correct 31 ms 146012 KB Output is correct
25 Correct 30 ms 143968 KB Output is correct
26 Correct 31 ms 143964 KB Output is correct
27 Correct 31 ms 146012 KB Output is correct
28 Correct 30 ms 146012 KB Output is correct
29 Correct 31 ms 146000 KB Output is correct
30 Correct 30 ms 144076 KB Output is correct
31 Correct 31 ms 143964 KB Output is correct
32 Correct 31 ms 143964 KB Output is correct
33 Correct 31 ms 146012 KB Output is correct
34 Correct 31 ms 146012 KB Output is correct
35 Correct 30 ms 146008 KB Output is correct
36 Correct 31 ms 146012 KB Output is correct
37 Correct 31 ms 146104 KB Output is correct
38 Correct 31 ms 146012 KB Output is correct
39 Correct 33 ms 146080 KB Output is correct
40 Correct 32 ms 146012 KB Output is correct
41 Correct 31 ms 146012 KB Output is correct
42 Correct 34 ms 146268 KB Output is correct
43 Correct 32 ms 146012 KB Output is correct
44 Correct 31 ms 146012 KB Output is correct
45 Correct 32 ms 146012 KB Output is correct
46 Correct 33 ms 146012 KB Output is correct
47 Correct 31 ms 146012 KB Output is correct
48 Correct 31 ms 146012 KB Output is correct
49 Correct 32 ms 146012 KB Output is correct
50 Correct 34 ms 146004 KB Output is correct
51 Correct 31 ms 146156 KB Output is correct
52 Correct 31 ms 146012 KB Output is correct
53 Correct 30 ms 146024 KB Output is correct
54 Correct 32 ms 146008 KB Output is correct
55 Correct 40 ms 187728 KB Output is correct
56 Correct 33 ms 146268 KB Output is correct
57 Correct 40 ms 199504 KB Output is correct
58 Correct 1970 ms 181208 KB Output is correct
59 Execution timed out 2467 ms 262144 KB Time limit exceeded
60 Halted 0 ms 0 KB -