oj.uz

Submission #786705

# Submission time Handle Problem Language Result Execution time Memory
786705 2023-07-18T11:31:52 Z allin27x Tropical Garden (IOI11_garden) C++17
69 / 100
 2167 ms 6380 KB 
#include <bits/stdc++.h>
using namespace std;


int gl;
int ps[(int)15e4+2][2];
int vis[(int)15e4+2][2];
int ds[(int)15e4+2][2];
int gd[(int)15e4+2][2];

int a1 = 0; int a2 = 0;
int g1 = 0; int g2 = 0;
int dfs1(int p, int last, int len){
	int nx;
	if (last == ps[p][0]) nx = 1;
	else nx = 0;

	if (p==gl) return len * (2*nx-1);
	if (vis[p][nx]) return (int)1e7;
	vis[p][nx] = 1;
	return dfs1(ps[p][nx], p, len+1);
}


void answer(int x);


// void answer(int x){
//     cout<<x<<'\n';
// }

void dfs2(int p, int last){
	int nx;  if (last == ps[p][0]) nx = 1; else nx = 0;
	if (p == gl){
		gd[p][nx] = nx;
		ds[p][nx] = 0;
		return;
	}
	if (ds[p][nx]) return;
	if (vis[p][nx]){
		ds[p][nx] = (int)-1e5;
		return;
	}
	vis[p][nx] = 1;
	int nxt = ps[p][nx];
	int d; if (p == ps[nxt][0]) d = 1; else d = 0;
	dfs2(nxt, p);
	gd[p][nx] = gd[nxt][d];
	ds[p][nx] = ds[nxt][d]+1;
}


void count_routes(int N, int M, int P, int R[][2], int Q, int G[]){ 
	gl = P;
    for (int i=0; i<N; i++) ps[i][0]=-1, ps[i][1]=-1;
    for (int i=0; i<M; i++){
        int a = R[i][0]; int b= R[i][1];
        if (ps[a][0]==-1) ps[a][0] = b; else if (ps[a][1]==-1) ps[a][1] = b;
        if (ps[b][0]==-1) ps[b][0] = a; else if (ps[b][1]==-1) ps[b][1] = a;
    }
    for (int i=0; i<N; i++) if (ps[i][1]==-1) ps[i][1] = ps[i][0];
    
    for (int i=0; i<N; i++) vis[i][0] = 0, vis[i][1] = 0;
    int r1 = dfs1(ps[P][0], P, 1);
	for (int i=0; i<N; i++) vis[i][0] = 0, vis[i][1] = 0;
	int r2 = dfs1(ps[P][1], P, 1);
	if (r1!=1e7) {
		if (r1>0) g1 = 1;
		a1 = abs(r1);
	}
	if (r2!=1e7){
		if (r2>0) g2 = 1;
		a2 = abs(r2);
	}

	for (int i=0; i<N; i++) vis[i][0] = 0, vis[i][1] = 0;
    for (int i=0; i<N; i++) ds[i][0] = 0, ds[i][1] = 0;
    for (int i=0; i<N; i++) {
    	if (i==P) continue;
    	if (!ds[i][0]) dfs2(i, -1);
    }
    ds[P][0] = 0; ds[P][1] = 0;
    for (int q = 0; q<Q; q++){
    	int k = G[q];
    	int ans = 0;
    	for (int i=0; i<N; i++){
    		if (ds[i][0] < 0) continue;
    		if (k<ds[i][0]) continue;
    		int t= k - ds[i][0];
    		if (gd[i][0]==0 || i==P){
    			if (a1 == 0) continue;
    			if (g1 == 0 && t%a1 == 0) ans++;
    			if (g1 == 1 && a2 == 0 && (t==0 || t==a1)) ans++;
    			if (g1 == 1 && g2 == 0 && (t%(a1+a2)==0 || t%(a1+a2)==a1)) ans++;
				if (t && t<a1) continue;
				if (g1 == 1 && g2 == 1 && (t==0 || (t-a1)%a2 == 0)) ans++;    			 
    		} else {
    			if (a2 == 0) continue;
    			if (g2 == 1 && t%a2 == 0) ans++;
    			if (g2 == 0 && a1 == 0 && (t==0 || t==a2)) ans++;
    			if (g2 == 0 && g1 == 1 && (t%(a1+a2)==0 || t%(a1+a2)==a2)) ans++;
				if (t && t<a2) continue;
				if (g2 == 0 && g1 == 0 && (t==0 || (t-a2)%a1 == 0)) ans++; 
       		}
    	}
    	answer(ans);
    }
}

// int main(){
//     // int n = 5; int m = 5;
//     // int p=2;int q = 2; int g[] = {3,1};
//     // int r[][2]= {
//     //     {1,0},
//     //     {1,2},
//     //     {3,2},
//     //     {1,3},
//     //     {4,2}
//     // };

//     // count_routes(n,m,p,r,q,g);
//     // int n = 6; int m = 6;
//     // int p=0;int q = 1; int g[] = {3};
//     // int r[][2]= {
//     //     {1,2},
//     //     {0,1},
//     //     {0,3},
//     //     {3,4},
//     //     {4,5},
//     //     {1,5}
//     // };

//     // count_routes(n,m,p,r,q,g);
//     int n = 5; int m = 4;
//     int p=0;int q = 10; int g[] = {100,101,102,103,104,105,106,107,108,109};
//     int r[][2]= {
//         {0,1},
//         {1,2},
//         {2,3},
//         {3,4}
//     };

//     count_routes(n,m,p,r,q,g);
//     // cout<<'\n';
//     // for (int i=0; i<n; i++){
//     //     cout<<i<<' '<<jump(i, 4)<<'\n';
//     // }
// }

Subtask #1
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 4 ms 1364 KB Output is correct
12 Correct 9 ms 2132 KB Output is correct
13 Correct 16 ms 3628 KB Output is correct
14 Correct 25 ms 5572 KB Output is correct
15 Correct 26 ms 5668 KB Output is correct
16 Correct 22 ms 4308 KB Output is correct
17 Correct 22 ms 3768 KB Output is correct
18 Correct 9 ms 1860 KB Output is correct
19 Correct 24 ms 5596 KB Output is correct
20 Correct 26 ms 5692 KB Output is correct
21 Correct 26 ms 4280 KB Output is correct
22 Correct 23 ms 3744 KB Output is correct
23 Correct 27 ms 6380 KB Output is correct

Subtask #3
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 4 ms 1364 KB Output is correct
12 Correct 9 ms 2132 KB Output is correct
13 Correct 16 ms 3628 KB Output is correct
14 Correct 25 ms 5572 KB Output is correct
15 Correct 26 ms 5668 KB Output is correct
16 Correct 22 ms 4308 KB Output is correct
17 Correct 22 ms 3768 KB Output is correct
18 Correct 9 ms 1860 KB Output is correct
19 Correct 24 ms 5596 KB Output is correct
20 Correct 26 ms 5692 KB Output is correct
21 Correct 26 ms 4280 KB Output is correct
22 Correct 23 ms 3744 KB Output is correct
23 Correct 27 ms 6380 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 39 ms 1356 KB Output is correct
26 Correct 55 ms 2136 KB Output is correct
27 Correct 1020 ms 3668 KB Output is correct
28 Correct 562 ms 5664 KB Output is correct
29 Correct 2167 ms 5752 KB Output is correct
30 Correct 1260 ms 4400 KB Output is correct
31 Correct 1231 ms 3796 KB Output is correct
32 Incorrect 55 ms 1876 KB Output isn't correct
33 Halted 0 ms 0 KB -