Submission #351006

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
351006	2021-01-19T11:10:52 Z	Kerim	Swapping Cities (APIO20_swap)	C++17	37 / 100	2000 ms	56288 KB

swap

#include "swap.h"
#include "bits/stdc++.h"
#define MAXN 300009
#define INF 1000000007
#define mp(x,y) make_pair(x,y)
#define all(v) v.begin(),v.end()
#define pb(x) push_back(x)
#define wr cout<<"----------------"<<endl;
#define ppb() pop_back()
#define tr(ii,c) for(__typeof((c).begin()) ii=(c).begin();ii!=(c).end();ii++)
#define ff first
#define ss second
#define my_little_dodge 46
#define debug(x)  cerr<< #x <<" = "<< x<<endl;
using namespace std;

typedef long long ll;
typedef pair<int,int> PII;
template<class T>bool umin(T& a,T b){if(a>b){a=b;return 1;}return 0;}
template<class T>bool umax(T& a,T b){if(a<b){a=b;return 1;}return 0;}
vector<int>u,v,w,ind;
int m,n;
int ata[MAXN],bad[MAXN],deg[MAXN];
int tap(int x){
	if(ata[x]==x)return x;
	return ata[x]=tap(ata[x]);	
}
bool cmp(int x,int y){
	return (w[x]<w[y]);	
}
const int LOG=18;
int lvl[MAXN],P[MAXN][LOG];
vector<int>adj[MAXN];
PII arr[MAXN];
void add(int x,int y){
	P[y][0]=x;adj[x].pb(y);
	//cerr<<x<<"->"<<y<<endl;	
}
void merge(int x,int y,int val){
	deg[x]++;deg[y]++;
	int so=(max(deg[x],deg[y])>=3);
	//printf("HI %d %d %d\n",x,y,val);
	x=tap(x);y=tap(y);
	if(x==y)
		bad[n]=1,ata[x]=n,add(n,x);
	else{
		add(n,x);add(n,y);
		ata[y]=ata[x]=n;
		bad[n]=bad[x]|bad[y]|so;
	}
	//printf("%d %d\n",val,bad[n]);
	arr[n++]=mp(val,bad[n]);
}
void dfs(int nd){tr(it,adj[nd])lvl[*it]=lvl[nd]+1,dfs(*it);}
void init(int N, int M,vector<int>U,vector<int> V,vector<int> W) {
	u=U;v=V;w=W;m=M;n=N;
	for(int i=0;i<m;i++)ind.pb(i);
	sort(all(ind),cmp);
	for(int i=0;i<m+n;i++)ata[i]=i;
	for(int i=0;i<m;i++)
		merge(u[ind[i]],v[ind[i]],w[ind[i]]);
	dfs(n-1);
}
int getMinimumFuelCapacity(int X, int Y){
	while(X!=Y){
		if(lvl[X]>lvl[Y])X=P[X][0];
		else Y=P[Y][0];	
	}
	while(X and !arr[X].ss)X=P[X][0];
	if(!X)return -1;
	return arr[X].ff;
}

Compilation message

swap.cpp: In function 'void merge(int, int, int)':
swap.cpp:52:7: warning: operation on 'n' may be undefined [-Wsequence-point]
   52 |  arr[n++]=mp(val,bad[n]);
      |      ~^~

Subtask #1

0 / 6.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	7404 KB	Output is correct
2	Correct	5 ms	7404 KB	Output is correct
3	Correct	5 ms	7404 KB	Output is correct
4	Correct	7 ms	7532 KB	Output is correct
5	Correct	6 ms	7660 KB	Output is correct
6	Correct	6 ms	7660 KB	Output is correct
7	Correct	6 ms	7660 KB	Output is correct
8	Correct	6 ms	7788 KB	Output is correct
9	Correct	96 ms	28132 KB	Output is correct
10	Correct	121 ms	32740 KB	Output is correct
11	Correct	121 ms	32356 KB	Output is correct
12	Correct	128 ms	33892 KB	Output is correct
13	Correct	103 ms	36344 KB	Output is correct
14	Correct	119 ms	28388 KB	Output is correct
15	Correct	369 ms	37232 KB	Output is correct
16	Correct	385 ms	36364 KB	Output is correct
17	Correct	375 ms	37860 KB	Output is correct
18	Execution timed out	2064 ms	40036 KB	Time limit exceeded

Subtask #2

0 / 7.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	7404 KB	Output is correct
2	Correct	5 ms	7404 KB	Output is correct
3	Execution timed out	2065 ms	40232 KB	Time limit exceeded
4	Halted	0 ms	0 KB	-

Subtask #3

17.0 / 17.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	7 ms	7404 KB	Output is correct
2	Correct	5 ms	7404 KB	Output is correct
3	Correct	5 ms	7404 KB	Output is correct
4	Correct	5 ms	7404 KB	Output is correct
5	Correct	7 ms	7532 KB	Output is correct
6	Correct	6 ms	7660 KB	Output is correct
7	Correct	6 ms	7660 KB	Output is correct
8	Correct	6 ms	7660 KB	Output is correct
9	Correct	6 ms	7788 KB	Output is correct
10	Correct	6 ms	7660 KB	Output is correct
11	Correct	6 ms	7660 KB	Output is correct
12	Correct	6 ms	7660 KB	Output is correct
13	Correct	7 ms	7660 KB	Output is correct
14	Correct	6 ms	7660 KB	Output is correct
15	Correct	7 ms	7660 KB	Output is correct
16	Correct	6 ms	7660 KB	Output is correct
17	Correct	6 ms	7660 KB	Output is correct
18	Correct	7 ms	7660 KB	Output is correct
19	Correct	8 ms	7660 KB	Output is correct
20	Correct	6 ms	7660 KB	Output is correct
21	Correct	8 ms	7660 KB	Output is correct
22	Correct	6 ms	7788 KB	Output is correct
23	Correct	6 ms	7660 KB	Output is correct
24	Correct	7 ms	7788 KB	Output is correct
25	Correct	7 ms	7788 KB	Output is correct
26	Correct	6 ms	7916 KB	Output is correct
27	Correct	6 ms	7660 KB	Output is correct
28	Correct	7 ms	7916 KB	Output is correct

Subtask #4

20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	7 ms	7404 KB	Output is correct
2	Correct	5 ms	7404 KB	Output is correct
3	Correct	5 ms	7404 KB	Output is correct
4	Correct	5 ms	7404 KB	Output is correct
5	Correct	7 ms	7532 KB	Output is correct
6	Correct	6 ms	7660 KB	Output is correct
7	Correct	6 ms	7660 KB	Output is correct
8	Correct	6 ms	7660 KB	Output is correct
9	Correct	6 ms	7788 KB	Output is correct
10	Correct	96 ms	28132 KB	Output is correct
11	Correct	121 ms	32740 KB	Output is correct
12	Correct	121 ms	32356 KB	Output is correct
13	Correct	128 ms	33892 KB	Output is correct
14	Correct	103 ms	36344 KB	Output is correct
15	Correct	6 ms	7660 KB	Output is correct
16	Correct	6 ms	7660 KB	Output is correct
17	Correct	6 ms	7660 KB	Output is correct
18	Correct	7 ms	7660 KB	Output is correct
19	Correct	6 ms	7660 KB	Output is correct
20	Correct	7 ms	7660 KB	Output is correct
21	Correct	6 ms	7660 KB	Output is correct
22	Correct	6 ms	7660 KB	Output is correct
23	Correct	7 ms	7660 KB	Output is correct
24	Correct	20 ms	11032 KB	Output is correct
25	Correct	130 ms	33508 KB	Output is correct
26	Correct	125 ms	33636 KB	Output is correct
27	Correct	134 ms	33508 KB	Output is correct
28	Correct	140 ms	33160 KB	Output is correct
29	Correct	131 ms	33008 KB	Output is correct
30	Correct	121 ms	30920 KB	Output is correct
31	Correct	148 ms	33952 KB	Output is correct
32	Correct	156 ms	33548 KB	Output is correct
33	Correct	101 ms	36580 KB	Output is correct
34	Correct	159 ms	33892 KB	Output is correct
35	Correct	8 ms	7660 KB	Output is correct
36	Correct	6 ms	7660 KB	Output is correct
37	Correct	8 ms	7660 KB	Output is correct
38	Correct	6 ms	7788 KB	Output is correct
39	Correct	6 ms	7660 KB	Output is correct
40	Correct	7 ms	7788 KB	Output is correct
41	Correct	7 ms	7788 KB	Output is correct
42	Correct	6 ms	7916 KB	Output is correct
43	Correct	6 ms	7660 KB	Output is correct
44	Correct	7 ms	7916 KB	Output is correct
45	Correct	204 ms	44896 KB	Output is correct
46	Correct	133 ms	33508 KB	Output is correct
47	Correct	136 ms	33636 KB	Output is correct
48	Correct	152 ms	37096 KB	Output is correct
49	Correct	147 ms	42932 KB	Output is correct
50	Correct	114 ms	35120 KB	Output is correct
51	Correct	165 ms	39984 KB	Output is correct
52	Correct	217 ms	47840 KB	Output is correct
53	Correct	250 ms	50912 KB	Output is correct
54	Correct	255 ms	56288 KB	Output is correct
55	Correct	114 ms	36388 KB	Output is correct
56	Correct	224 ms	51552 KB	Output is correct

Subtask #5

0 / 23.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	7404 KB	Output is correct
2	Correct	5 ms	7404 KB	Output is correct
3	Correct	5 ms	7404 KB	Output is correct
4	Correct	7 ms	7532 KB	Output is correct
5	Correct	6 ms	7660 KB	Output is correct
6	Correct	6 ms	7660 KB	Output is correct
7	Correct	6 ms	7660 KB	Output is correct
8	Correct	6 ms	7788 KB	Output is correct
9	Correct	96 ms	28132 KB	Output is correct
10	Correct	121 ms	32740 KB	Output is correct
11	Correct	121 ms	32356 KB	Output is correct
12	Correct	128 ms	33892 KB	Output is correct
13	Correct	103 ms	36344 KB	Output is correct
14	Correct	119 ms	28388 KB	Output is correct
15	Correct	369 ms	37232 KB	Output is correct
16	Correct	385 ms	36364 KB	Output is correct
17	Correct	375 ms	37860 KB	Output is correct
18	Execution timed out	2064 ms	40036 KB	Time limit exceeded

Subtask #6

0 / 27.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	7 ms	7404 KB	Output is correct
2	Correct	5 ms	7404 KB	Output is correct
3	Correct	5 ms	7404 KB	Output is correct
4	Correct	5 ms	7404 KB	Output is correct
5	Correct	7 ms	7532 KB	Output is correct
6	Correct	6 ms	7660 KB	Output is correct
7	Correct	6 ms	7660 KB	Output is correct
8	Correct	6 ms	7660 KB	Output is correct
9	Correct	6 ms	7788 KB	Output is correct
10	Correct	96 ms	28132 KB	Output is correct
11	Correct	121 ms	32740 KB	Output is correct
12	Correct	121 ms	32356 KB	Output is correct
13	Correct	128 ms	33892 KB	Output is correct
14	Correct	103 ms	36344 KB	Output is correct
15	Correct	119 ms	28388 KB	Output is correct
16	Correct	369 ms	37232 KB	Output is correct
17	Correct	385 ms	36364 KB	Output is correct
18	Correct	375 ms	37860 KB	Output is correct
19	Execution timed out	2064 ms	40036 KB	Time limit exceeded