oj.uz

Submission #164518

# Submission time Handle Problem Language Result Execution time Memory
164518 2019-11-21T08:45:51 Z balbit Dango Maker (JOI18_dango_maker) C++14
33 / 100
 949 ms 262144 KB 
#include <bits/stdc++.h>
using namespace std;
#define pii pair<int,int>
#define ll long long
#define f first
#define s second
#define FOR(i,a,b) for (int i = a; i<b; i++)
#define REP(i,n) FOR(i,0,n)
#define RREP(i,n) for (int i = n-1; i>=0; i--)
#define SZ(x) (int)(x.size())
#define ALL(x) x.begin(),x.end()
#define MX(a,b) a = max(a,(__typeof__(a))(b))
#define MN(a,b) a = min(a,(__typeof__(a))(b))
#define pb push_back
#ifdef BALBIT
#define IOS()
#define bug(x) cerr<<__LINE__<<' '<<#x<<": "<<x<<endl
#else
#define IOS() ios::sync_with_stdio(0),cin.tie(0)
#define endl '\n'
#define bug(x)
#endif

const ll mod = 1e9+7;
const int maxn = 3e3+5;
//const ll INF = 0x3f3f3f3f3f3f3f3f;
const int iinf = 0x3f3f3f3f;


#define MAX 2000001
#define NIL 0
#define INF (1<<28)

vector< int > G[MAX];
int N, M, match[MAX], dist[MAX];
// n: number of nodes on left side, nodes are numbered 1 to n
// m: number of nodes on right side, nodes are numbered n+1 to n+m
// G = NIL[0] ∪ G1[G[1---n]] ∪ G2[G[n+1---n+m]]

bool bfs() {
    int i, u, v, len;
    queue< int > Q;
    for(i=1; i<=N; i++) {
        if(match[i]==NIL) {
            dist[i] = 0;
            Q.push(i);
        }
        else dist[i] = INF;
    }
    dist[NIL] = INF;
    while(!Q.empty()) {
        u = Q.front(); Q.pop();
        if(u!=NIL) {
            len = G[u].size();
            for(i=0; i<len; i++) {
                v = G[u][i];
                if(dist[match[v]]==INF) {
                    dist[match[v]] = dist[u] + 1;
                    Q.push(match[v]);
                }
            }
        }
    }
    return (dist[NIL]!=INF);
}

bool dfs(int u) {
    int i, v, len;
    if(u!=NIL) {
        len = G[u].size();
        for(i=0; i<len; i++) {
            v = G[u][i];
            if(dist[match[v]]==dist[u]+1) {
                if(dfs(match[v])) {
                    match[v] = u;
                    match[u] = v;
                    return true;
                }
            }
        }
        dist[u] = INF;
        return false;
    }
    return true;
}

int hopcroft_karp() {
    int matching = 0, i;
    // match[] is assumed NIL for all vertex in G
    while(bfs())
        for(i=1; i<=N; i++)
            if(match[i]==NIL && dfs(i))
                matching++;
    return matching;
}
	


char grd[maxn][maxn];

int idup[maxn][maxn];
int idrt[maxn][maxn];
bool up[maxn][maxn];
bool rt[maxn][maxn];


void add(int a, int b, int c){
//	return;
	G[a].pb(b);
}

signed main(){
	IOS();
	int n, m; cin>>n>>m;
	
	REP(i,n) REP(j,m) cin>>grd[i][j];
	int nup = 0, nrt = 0;

	REP(i,n)REP(j,m){

		if(grd[i][j]=='G'){
			if (i && i!=n-1 && grd[i-1][j] == 'R' && grd[i+1][j]=='W' ) {
				up[i][j] = 1;
			}
			if (j && j!=m-1 && grd[i][j-1] == 'R' && grd[i][j+1]=='W' ) {
				rt[i][j] = 1;
			}
		}
	}


//	g.resize(N); ptr.resize(N); level.resize(N);
	int ans = 0;
	REP(i,n) REP(j,m){
		if(up[i][j]){
//			cout<<i<<' '<<j<<' '<<idup[i][j]<<endl;
			bool B = 0;
			if(rt[i][j]) B=1, idrt[i][j] = 1;
			if(i && rt[i-1][j+1]) B=1, idrt[i-1][j+1] = 1;
			if(j && rt[i+1][j-1]) B=1, idrt[i+1][j-1] = 1;
			nup += B; 	
			idup[i][j] = B;
			if (!B) ans ++;
		}
	}
	int nat = 0;
	REP(i,n) REP(j,m){
		if (idrt[i][j]){
			idrt[i][j] = ++nat; 
		}else if (rt[i][j]) ans ++;
	}
	nrt = nat; 
	nat = 0;
	REP(i,n) REP(j,m){
		if(idup[i][j]){
			idup[i][j] = ++nat;
//			cout<<i<<' '<<j<<' '<<idup[i][j]<<endl;
			if(idrt[i][j]) {
				add(idup[i][j], idrt[i][j] + nup, iinf);
			}
			if(i && idrt[i-1][j+1]){
				add(idup[i][j], idrt[i-1][j+1] + nup, iinf);
			}
			if(j && idrt[i+1][j-1]){
				add(idup[i][j], idrt[i+1][j-1] + nup, iinf);
			}
		}

	}
	bug(ans);
	N = nup; 
	bug(nup); bug(nrt); 
	cout<<ans + nup + nrt - hopcroft_karp() << endl;
	
}

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 47 ms 47352 KB Output is correct
2 Correct 47 ms 47352 KB Output is correct
3 Correct 47 ms 47352 KB Output is correct
4 Correct 100 ms 47352 KB Output is correct
5 Correct 47 ms 47352 KB Output is correct
6 Correct 47 ms 47352 KB Output is correct
7 Correct 64 ms 47480 KB Output is correct
8 Correct 47 ms 47352 KB Output is correct
9 Correct 47 ms 47404 KB Output is correct
10 Correct 47 ms 47352 KB Output is correct
11 Correct 46 ms 47356 KB Output is correct
12 Correct 47 ms 47352 KB Output is correct
13 Correct 49 ms 47352 KB Output is correct
14 Correct 46 ms 47352 KB Output is correct
15 Correct 46 ms 47324 KB Output is correct
16 Correct 48 ms 47480 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 47 ms 47352 KB Output is correct
2 Correct 47 ms 47352 KB Output is correct
3 Correct 47 ms 47352 KB Output is correct
4 Correct 100 ms 47352 KB Output is correct
5 Correct 47 ms 47352 KB Output is correct
6 Correct 47 ms 47352 KB Output is correct
7 Correct 64 ms 47480 KB Output is correct
8 Correct 47 ms 47352 KB Output is correct
9 Correct 47 ms 47404 KB Output is correct
10 Correct 47 ms 47352 KB Output is correct
11 Correct 46 ms 47356 KB Output is correct
12 Correct 47 ms 47352 KB Output is correct
13 Correct 49 ms 47352 KB Output is correct
14 Correct 46 ms 47352 KB Output is correct
15 Correct 46 ms 47324 KB Output is correct
16 Correct 48 ms 47480 KB Output is correct
17 Correct 48 ms 47452 KB Output is correct
18 Correct 47 ms 47352 KB Output is correct
19 Correct 49 ms 47352 KB Output is correct
20 Correct 48 ms 47480 KB Output is correct
21 Correct 48 ms 47480 KB Output is correct
22 Correct 47 ms 47480 KB Output is correct
23 Correct 49 ms 47352 KB Output is correct
24 Correct 47 ms 47352 KB Output is correct
25 Correct 49 ms 47352 KB Output is correct
26 Correct 50 ms 47352 KB Output is correct
27 Correct 49 ms 47480 KB Output is correct
28 Correct 50 ms 47480 KB Output is correct
29 Correct 48 ms 47480 KB Output is correct
30 Correct 48 ms 47356 KB Output is correct
31 Correct 48 ms 47352 KB Output is correct
32 Correct 47 ms 47352 KB Output is correct
33 Correct 47 ms 47480 KB Output is correct
34 Correct 47 ms 47480 KB Output is correct
35 Correct 47 ms 47480 KB Output is correct
36 Correct 46 ms 47480 KB Output is correct
37 Correct 47 ms 47480 KB Output is correct
38 Correct 47 ms 47452 KB Output is correct
39 Correct 49 ms 47480 KB Output is correct
40 Correct 49 ms 47480 KB Output is correct
41 Correct 49 ms 47480 KB Output is correct
42 Correct 118 ms 47480 KB Output is correct
43 Correct 50 ms 47632 KB Output is correct
44 Correct 49 ms 47548 KB Output is correct
45 Correct 50 ms 47480 KB Output is correct
46 Correct 50 ms 47544 KB Output is correct
47 Correct 48 ms 47480 KB Output is correct
48 Correct 49 ms 47480 KB Output is correct
49 Correct 49 ms 47484 KB Output is correct
50 Correct 50 ms 47608 KB Output is correct
51 Correct 48 ms 47448 KB Output is correct
52 Correct 50 ms 47452 KB Output is correct
53 Correct 49 ms 47480 KB Output is correct

Subtask #3
0 / 67.0

# Verdict Execution time Memory Grader output
1 Correct 47 ms 47352 KB Output is correct
2 Correct 47 ms 47352 KB Output is correct
3 Correct 47 ms 47352 KB Output is correct
4 Correct 100 ms 47352 KB Output is correct
5 Correct 47 ms 47352 KB Output is correct
6 Correct 47 ms 47352 KB Output is correct
7 Correct 64 ms 47480 KB Output is correct
8 Correct 47 ms 47352 KB Output is correct
9 Correct 47 ms 47404 KB Output is correct
10 Correct 47 ms 47352 KB Output is correct
11 Correct 46 ms 47356 KB Output is correct
12 Correct 47 ms 47352 KB Output is correct
13 Correct 49 ms 47352 KB Output is correct
14 Correct 46 ms 47352 KB Output is correct
15 Correct 46 ms 47324 KB Output is correct
16 Correct 48 ms 47480 KB Output is correct
17 Correct 48 ms 47452 KB Output is correct
18 Correct 47 ms 47352 KB Output is correct
19 Correct 49 ms 47352 KB Output is correct
20 Correct 48 ms 47480 KB Output is correct
21 Correct 48 ms 47480 KB Output is correct
22 Correct 47 ms 47480 KB Output is correct
23 Correct 49 ms 47352 KB Output is correct
24 Correct 47 ms 47352 KB Output is correct
25 Correct 49 ms 47352 KB Output is correct
26 Correct 50 ms 47352 KB Output is correct
27 Correct 49 ms 47480 KB Output is correct
28 Correct 50 ms 47480 KB Output is correct
29 Correct 48 ms 47480 KB Output is correct
30 Correct 48 ms 47356 KB Output is correct
31 Correct 48 ms 47352 KB Output is correct
32 Correct 47 ms 47352 KB Output is correct
33 Correct 47 ms 47480 KB Output is correct
34 Correct 47 ms 47480 KB Output is correct
35 Correct 47 ms 47480 KB Output is correct
36 Correct 46 ms 47480 KB Output is correct
37 Correct 47 ms 47480 KB Output is correct
38 Correct 47 ms 47452 KB Output is correct
39 Correct 49 ms 47480 KB Output is correct
40 Correct 49 ms 47480 KB Output is correct
41 Correct 49 ms 47480 KB Output is correct
42 Correct 118 ms 47480 KB Output is correct
43 Correct 50 ms 47632 KB Output is correct
44 Correct 49 ms 47548 KB Output is correct
45 Correct 50 ms 47480 KB Output is correct
46 Correct 50 ms 47544 KB Output is correct
47 Correct 48 ms 47480 KB Output is correct
48 Correct 49 ms 47480 KB Output is correct
49 Correct 49 ms 47484 KB Output is correct
50 Correct 50 ms 47608 KB Output is correct
51 Correct 48 ms 47448 KB Output is correct
52 Correct 50 ms 47452 KB Output is correct
53 Correct 49 ms 47480 KB Output is correct
54 Correct 48 ms 47332 KB Output is correct
55 Correct 69 ms 57068 KB Output is correct
56 Correct 47 ms 47480 KB Output is correct
57 Correct 70 ms 69084 KB Output is correct
58 Correct 98 ms 71900 KB Output is correct
59 Correct 400 ms 148824 KB Output is correct
60 Correct 401 ms 148884 KB Output is correct
61 Correct 428 ms 148820 KB Output is correct
62 Correct 48 ms 47356 KB Output is correct
63 Correct 479 ms 148704 KB Output is correct
64 Runtime error 949 ms 262144 KB Execution killed with signal 11 (could be triggered by violating memory limits)
65 Halted 0 ms 0 KB -