oj.uz

Submission #69652

# Submission time Handle Problem Language Result Execution time Memory
69652 2018-08-21T10:38:03 Z yogahmad Wild Boar (JOI18_wild_boar) C++14
12 / 100
 18000 ms 10220 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
#define fbo find_by_order
#define ook order_of_key
#define f first
#define s second
#define pb push_back
#define reset(a,b) memset(a,b,sizeof a);
#define MOD 1000000007
#define MID (l+r)/2
#define ALL(x) x.begin(),x.end()
#define debug(x) cout<<#x<<" = "<<(x)<<endl
#define mx 4003
#define pc(x) putchar_unlocked(x);
typedef tree<long long, null_type, less<long long>, rb_tree_tag, tree_order_statistics_node_update> pbds;

long long n,u,v,w,m,t,l,di[mx][mx],x[100003];
pair<long long,int>dist1[mx][mx],dist2[mx][mx],ini[mx],bisa1[mx][mx],bisa2[mx][mx];
struct edge{
	long long v,w,id;
};

vector<edge>g[mx];

void apsp(){
	for(int i=1;i<=n;i++){
		for(int j=1;j<=n;j++){
			bisa1[i][j]={-1,0};
			bisa2[i][j]={-1,0};
		}
	}
	for(int dari=1;dari<=n;dari++){
		priority_queue<pair<long long,pair<int,int>>>q;
		bisa1[dari][dari]={0,0};
		q.push({0,{dari,0}});
		while(!q.empty()){
			auto now=q.top().s;
			auto sem=q.top().f;
			q.pop();
			for(auto i:g[now.f]){
				if(i.v==now.s)continue;
				auto nxt=-sem+i.w;
				if(bisa1[dari][i.v].f==-1 || bisa1[dari][i.v].f>nxt){
					assert(bisa1[dari][i.v].s!=now.f);
					bisa2[dari][i.v]=bisa1[dari][i.v];
					bisa1[dari][i.v]={nxt,now.f};
					q.push({-nxt,{i.v,now.f}});
				}
				else if((bisa2[dari][i.v].f==-1 || bisa2[dari][i.v].f>nxt) && now.f!=bisa1[dari][i.v].s){
					bisa2[dari][i.v]={nxt,now.f};
					q.push({-nxt,{i.v,now.f}});
				}
			}
		}
	}
}

void comp(int cnt){
	for(int i=1;i<=n;i++){
		dist1[cnt][i]={-1,0};
		dist2[cnt][i]={-1,0};
	}
	priority_queue<pair<long long,pair<int,int>>>q;
	for(auto i:g[ini[cnt].f]){
		if(i.v==ini[cnt].s)continue;
		dist1[cnt][i.v].f=i.w;
		dist1[cnt][i.v].s=ini[cnt].f;
		q.push({-i.w,{i.v,ini[cnt].f}});
	}
	while(!q.empty()){
		auto now=q.top().s;
		auto sem=q.top().f;
		q.pop();
		for(auto i:g[now.f]){
			if(i.v==now.s)continue;
			auto nxt=-sem+i.w;
			if(dist1[cnt][i.v].f==-1 || dist1[cnt][i.v].f>nxt){
				assert(dist1[cnt][i.v].s!=now.f);
				dist2[cnt][i.v]=dist1[cnt][i.v];
				dist1[cnt][i.v]={nxt,now.f};
				q.push({-nxt,{i.v,now.f}});
			}
			else if((dist2[cnt][i.v].f==-1 || dist2[cnt][i.v].f>nxt) && now.f!=dist1[cnt][i.v].s){
				dist2[cnt][i.v]={nxt,now.f};
				q.push({-nxt,{i.v,now.f}});
			}
		}
	}
}

long long hitung(){
	auto sa=bisa1[x[1]][x[2]];
	auto du=bisa2[x[1]][x[2]];
	vector<pair<long long,int>>ve,sem;
	if(sa.f!=-1)ve.pb(sa);
	if(du.f!=-1)ve.pb(du);
	for(int i=2;i<l;i++){
		sem.clear();
		for(auto xx:ve){
			int idx=di[x[i]][xx.s];
			auto a=dist1[idx][x[i+1]];
			if(a.f!=-1){
				a.f+=xx.f;
				sem.pb(a);
			}
			auto b=dist2[idx][x[i+1]];
			if(b.f!=-1){
				b.f+=xx.f;
				sem.pb(b);
			}
		}
		ve=sem;
		sort(ALL(ve));
		ve.erase((unique(ALL(ve))),ve.end());
		while(ve.size()>3000)ve.pop_back();
	}
	long long mini=-1;
	for(auto i:ve){
		assert(i.f!=-1);
		if(mini==-1 || mini>i.f)mini=i.f;
	}
	return mini;
}

int main(){
	scanf("%d%d%d%d",&n,&m,&t,&l);
	for(int i=1;i<=m;i++){
		scanf("%d%d%d",&u,&v,&w);
		g[u].pb({v,w,i});
		g[v].pb({u,w,i});
	}
	int cnt=0;
	apsp();
	for(int i=1;i<=n;i++){
		for(auto j:g[i]){
			di[i][j.v]=cnt;
			ini[cnt]={i,j.v};
			comp(cnt);
			cnt++;
		}
	}
	for(int i=1;i<=n;i++){
		for(int j=1;j<=n;j++){
	//		cout<<i<<" - satu > "<<j<<' '<<bisa1[i][j].f<<" "<<bisa1[i][j].s<<endl;
	//		cout<<i<<" - dua  > "<<j<<' '<<bisa2[i][j].f<<" "<<bisa2[i][j].s<<endl;
		}
	}
	for(int i=1;i<=l;i++)cin>>x[i];
	for(int i=0;i<cnt;i++){
		for(int j=1;j<=n;j++){
			if(dist1[i][j].f!=-1 && dist2[i][j].f!=-1){
				//cout<<i<<' '<<j<<endl;
				assert(dist1[i][j].s!=dist2[i][j].s);
			}
		}
	}
	for(int i=1;i<=n;i++){
		for(int j=1;j<=n;j++){
			if(bisa1[i][j].f!=-1 && bisa2[i][j].f!=-1){
				assert(bisa1[i][j].s!=bisa2[i][j].s);
			}
		}
	}
	while(t--){
		int l,r;
		scanf("%d%d",&l,&r);
		x[l]=r;
		printf("%lld\n",hitung());
	}
}

Compilation message

wild_boar.cpp: In function 'int main()':
wild_boar.cpp:129:30: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long long int*' [-Wformat=]
  scanf("%d%d%d%d",&n,&m,&t,&l);
                   ~~         ^
wild_boar.cpp:129:30: warning: format '%d' expects argument of type 'int*', but argument 3 has type 'long long int*' [-Wformat=]
wild_boar.cpp:129:30: warning: format '%d' expects argument of type 'int*', but argument 4 has type 'long long int*' [-Wformat=]
wild_boar.cpp:129:30: warning: format '%d' expects argument of type 'int*', but argument 5 has type 'long long int*' [-Wformat=]
wild_boar.cpp:131:26: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long long int*' [-Wformat=]
   scanf("%d%d%d",&u,&v,&w);
                  ~~      ^
wild_boar.cpp:131:26: warning: format '%d' expects argument of type 'int*', but argument 3 has type 'long long int*' [-Wformat=]
wild_boar.cpp:131:26: warning: format '%d' expects argument of type 'int*', but argument 4 has type 'long long int*' [-Wformat=]
wild_boar.cpp:129:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d%d%d",&n,&m,&t,&l);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
wild_boar.cpp:131:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d%d",&u,&v,&w);
   ~~~~~^~~~~~~~~~~~~~~~~~~
wild_boar.cpp:169:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d",&l,&r);
   ~~~~~^~~~~~~~~~~~~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 632 KB Output is correct
2 Correct 3 ms 744 KB Output is correct
3 Correct 2 ms 744 KB Output is correct
4 Correct 3 ms 820 KB Output is correct
5 Correct 4 ms 872 KB Output is correct
6 Correct 3 ms 920 KB Output is correct
7 Correct 3 ms 1184 KB Output is correct
8 Correct 3 ms 1184 KB Output is correct
9 Correct 3 ms 1184 KB Output is correct
10 Correct 3 ms 1184 KB Output is correct
11 Correct 3 ms 1184 KB Output is correct
12 Correct 3 ms 1184 KB Output is correct
13 Correct 3 ms 1184 KB Output is correct
14 Correct 3 ms 1184 KB Output is correct
15 Correct 3 ms 1184 KB Output is correct
16 Correct 3 ms 1184 KB Output is correct
17 Correct 2 ms 1184 KB Output is correct
18 Correct 3 ms 1184 KB Output is correct
19 Correct 4 ms 1184 KB Output is correct
20 Correct 3 ms 1184 KB Output is correct
21 Correct 3 ms 1184 KB Output is correct
22 Correct 4 ms 1184 KB Output is correct
23 Correct 3 ms 1184 KB Output is correct
24 Correct 2 ms 1184 KB Output is correct
25 Correct 3 ms 1184 KB Output is correct

Subtask #2
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 632 KB Output is correct
2 Correct 3 ms 744 KB Output is correct
3 Correct 2 ms 744 KB Output is correct
4 Correct 3 ms 820 KB Output is correct
5 Correct 4 ms 872 KB Output is correct
6 Correct 3 ms 920 KB Output is correct
7 Correct 3 ms 1184 KB Output is correct
8 Correct 3 ms 1184 KB Output is correct
9 Correct 3 ms 1184 KB Output is correct
10 Correct 3 ms 1184 KB Output is correct
11 Correct 3 ms 1184 KB Output is correct
12 Correct 3 ms 1184 KB Output is correct
13 Correct 3 ms 1184 KB Output is correct
14 Correct 3 ms 1184 KB Output is correct
15 Correct 3 ms 1184 KB Output is correct
16 Correct 3 ms 1184 KB Output is correct
17 Correct 2 ms 1184 KB Output is correct
18 Correct 3 ms 1184 KB Output is correct
19 Correct 4 ms 1184 KB Output is correct
20 Correct 3 ms 1184 KB Output is correct
21 Correct 3 ms 1184 KB Output is correct
22 Correct 4 ms 1184 KB Output is correct
23 Correct 3 ms 1184 KB Output is correct
24 Correct 2 ms 1184 KB Output is correct
25 Correct 3 ms 1184 KB Output is correct
26 Correct 33 ms 2040 KB Output is correct
27 Correct 37 ms 5356 KB Output is correct
28 Correct 32 ms 5356 KB Output is correct
29 Execution timed out 18012 ms 10220 KB Time limit exceeded
30 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 632 KB Output is correct
2 Correct 3 ms 744 KB Output is correct
3 Correct 2 ms 744 KB Output is correct
4 Correct 3 ms 820 KB Output is correct
5 Correct 4 ms 872 KB Output is correct
6 Correct 3 ms 920 KB Output is correct
7 Correct 3 ms 1184 KB Output is correct
8 Correct 3 ms 1184 KB Output is correct
9 Correct 3 ms 1184 KB Output is correct
10 Correct 3 ms 1184 KB Output is correct
11 Correct 3 ms 1184 KB Output is correct
12 Correct 3 ms 1184 KB Output is correct
13 Correct 3 ms 1184 KB Output is correct
14 Correct 3 ms 1184 KB Output is correct
15 Correct 3 ms 1184 KB Output is correct
16 Correct 3 ms 1184 KB Output is correct
17 Correct 2 ms 1184 KB Output is correct
18 Correct 3 ms 1184 KB Output is correct
19 Correct 4 ms 1184 KB Output is correct
20 Correct 3 ms 1184 KB Output is correct
21 Correct 3 ms 1184 KB Output is correct
22 Correct 4 ms 1184 KB Output is correct
23 Correct 3 ms 1184 KB Output is correct
24 Correct 2 ms 1184 KB Output is correct
25 Correct 3 ms 1184 KB Output is correct
26 Correct 33 ms 2040 KB Output is correct
27 Correct 37 ms 5356 KB Output is correct
28 Correct 32 ms 5356 KB Output is correct
29 Execution timed out 18012 ms 10220 KB Time limit exceeded
30 Halted 0 ms 0 KB -

Subtask #4
0 / 38.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 632 KB Output is correct
2 Correct 3 ms 744 KB Output is correct
3 Correct 2 ms 744 KB Output is correct
4 Correct 3 ms 820 KB Output is correct
5 Correct 4 ms 872 KB Output is correct
6 Correct 3 ms 920 KB Output is correct
7 Correct 3 ms 1184 KB Output is correct
8 Correct 3 ms 1184 KB Output is correct
9 Correct 3 ms 1184 KB Output is correct
10 Correct 3 ms 1184 KB Output is correct
11 Correct 3 ms 1184 KB Output is correct
12 Correct 3 ms 1184 KB Output is correct
13 Correct 3 ms 1184 KB Output is correct
14 Correct 3 ms 1184 KB Output is correct
15 Correct 3 ms 1184 KB Output is correct
16 Correct 3 ms 1184 KB Output is correct
17 Correct 2 ms 1184 KB Output is correct
18 Correct 3 ms 1184 KB Output is correct
19 Correct 4 ms 1184 KB Output is correct
20 Correct 3 ms 1184 KB Output is correct
21 Correct 3 ms 1184 KB Output is correct
22 Correct 4 ms 1184 KB Output is correct
23 Correct 3 ms 1184 KB Output is correct
24 Correct 2 ms 1184 KB Output is correct
25 Correct 3 ms 1184 KB Output is correct
26 Correct 33 ms 2040 KB Output is correct
27 Correct 37 ms 5356 KB Output is correct
28 Correct 32 ms 5356 KB Output is correct
29 Execution timed out 18012 ms 10220 KB Time limit exceeded
30 Halted 0 ms 0 KB -