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Submission #422141

# Submission time Handle Problem Language Result Execution time Memory
422141 2021-06-09T18:45:06 Z errorgorn Escape Route (JOI21_escape_route) C++17
70 / 100
 9000 ms 329284 KB 
    #include "escape_route.h"
     
    #include <bits/stdc++.h>
    using namespace std;
     
    #define ll long long
    #define ii pair<ll,ll>
    #define fi first
    #define se second
     
    #define puf push_front
    #define pof pop_front
    #define pub push_back
    #define pob pop_back
    #define lb lower_bound
    #define ub upper_bound
     
    #define rep(x,s,e) for (auto x=s-(s>e);x!=e-(s>e);s<e?x++:x--)
    #define all(x) (x).begin(),(x).end()
    #define sz(x) (int) (x).size()
     
    mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
     
    ll n,m,s,q;
     
    struct edge{
    	ll to;
    	ll w;
    	ll leave;
    };
    vector<edge> al[95];
     
     
    ll w[95][4105][95]; //(u,time,v) go from u to v at t=time
    vector<ll> t[95]; //the important times
     
     
    ll w2[95][95]; //(u,time,v) if you start u at time 0
     
     
    bool proc[95];
    ll dw[95];
    ii dw2[95];
     
    std::vector<ll> calculate_necessary_time(
        int N, int M, ll S, int Q, std::vector<int> A, std::vector<int> B,
        std::vector<ll> L, std::vector<ll> C, std::vector<int> U,
        std::vector<int> V, std::vector<ll> T) {
    		
    	
    	n=N,m=M,s=S,q=Q;
    	rep(x,0,m){
    		al[A[x]].pub(edge({B[x],L[x],C[x]-L[x]}));
    		al[B[x]].pub(edge({A[x],L[x],C[x]-L[x]}));
    	}
    	
    	rep(x,0,n){
    		memset(dw2,63,sizeof(dw2));
    		memset(proc,false,sizeof(proc));
    		
    		dw2[x]=ii(0,0);
    		rep(y,0,n){
    			ll curr=-1;
    			rep(z,0,n) if (!proc[z] && (curr==-1 || dw2[z]<dw2[curr])) curr=z;
    			proc[curr]=true;
    			
    			for (auto &it:al[curr]){
    				ii temp=dw2[curr];
    				if (temp.se<=it.leave) temp.se+=it.w;
    				else temp=ii(temp.fi+1,it.w);
    				
    				dw2[it.to]=min(dw2[it.to],temp);
    			}
    		}
    		
    		rep(y,0,n) w2[x][y]=dw2[y].fi*s+dw2[y].se;
    	}
    	
    	rep(x,0,n){
    		ll ctime=0;
    		int IDX=0;
    		
    		while (true){
    			ll extra=1e18;
    			
    			memset(dw,63,sizeof(dw));
    			memset(proc,false,sizeof(proc));
    			
    			dw[x]=ctime;
    			rep(y,0,n){
    				ll curr=-1;
    				rep(z,0,n) if (!proc[z] && (curr==-1 || dw[z]<dw[curr])) curr=z;
    				proc[curr]=true;
    				
    				for (auto &it:al[curr]){
    					ll temp=dw[curr];
    					if (temp<=it.leave){
    						extra=min(extra,it.leave-temp);
    						temp+=it.w;
    					}
    					else temp=5e18;
    					
    					dw[it.to]=min(dw[it.to],temp);
    				}
    			}
    			
    			t[x].pub(ctime);
    			rep(y,0,n) w[x][IDX][y]=dw[y];
    			IDX++;
    			
    			if (extra==1e18) break;
    			
    			//cout<<ctime<<" "<<extra<<endl;
    			
    			ctime+=extra+1;
    		}
    	}
    	
    	/*
    	rep(x,0,n){
    		rep(y,0,n) cout<<w2[x][y]<<" "; cout<<endl;
    	}
    	//*/
    	
    	vector<ll> ans;
    	
    	rep(x,0,q){
    		ll a=U[x],b=V[x],c=T[x];
    		
    		int iter=ub(all(t[a]),c)-t[a].begin()-1;
    		
    		ll res=w[a][iter][b]+(c-t[a][iter]);
    		rep(y,0,n) if (w[a][iter][y]<1e18){
    			res=min(res,w2[y][b]+s);
    		}
    		
    		ans.pub(res-c);
    	}
    	
    	//for (auto &it:ans) cout<<it<<" "; cout<<endl;
    	
    	return ans;
    }

Compilation message

escape_route.cpp: In function 'std::vector<long long int> calculate_necessary_time(int, int, long long int, int, std::vector<int>, std::vector<int>, std::vector<long long int>, std::vector<long long int>, std::vector<int>, std::vector<int>, std::vector<long long int>)':
escape_route.cpp:58:32: warning: 'void* memset(void*, int, size_t)' writing to an object of type 'struct std::pair<long long int, long long int>' with no trivial copy-assignment [-Wclass-memaccess]
   58 |       memset(dw2,63,sizeof(dw2));
      |                                ^
In file included from /usr/include/c++/10/bits/stl_algobase.h:64,
                 from /usr/include/c++/10/vector:60,
                 from escape_route.h:1,
                 from escape_route.cpp:1:
/usr/include/c++/10/bits/stl_pair.h:211:12: note: 'struct std::pair<long long int, long long int>' declared here
  211 |     struct pair
      |            ^~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 31 ms 64964 KB Output is correct
2 Correct 54 ms 64964 KB Output is correct
3 Correct 629 ms 64956 KB Output is correct
4 Correct 27 ms 64972 KB Output is correct
5 Correct 34 ms 65024 KB Output is correct
6 Correct 29 ms 64996 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1547 ms 146268 KB Output is correct
2 Correct 1470 ms 164580 KB Output is correct
3 Correct 1488 ms 153620 KB Output is correct
4 Correct 1661 ms 166044 KB Output is correct
5 Correct 1657 ms 165360 KB Output is correct
6 Correct 28 ms 64964 KB Output is correct
7 Correct 1521 ms 152976 KB Output is correct
8 Correct 646 ms 134792 KB Output is correct
9 Correct 1567 ms 144132 KB Output is correct
10 Correct 1604 ms 165020 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 31 ms 64964 KB Output is correct
2 Correct 54 ms 64964 KB Output is correct
3 Correct 629 ms 64956 KB Output is correct
4 Correct 27 ms 64972 KB Output is correct
5 Correct 34 ms 65024 KB Output is correct
6 Correct 29 ms 64996 KB Output is correct
7 Correct 1547 ms 146268 KB Output is correct
8 Correct 1470 ms 164580 KB Output is correct
9 Correct 1488 ms 153620 KB Output is correct
10 Correct 1661 ms 166044 KB Output is correct
11 Correct 1657 ms 165360 KB Output is correct
12 Correct 28 ms 64964 KB Output is correct
13 Correct 1521 ms 152976 KB Output is correct
14 Correct 646 ms 134792 KB Output is correct
15 Correct 1567 ms 144132 KB Output is correct
16 Correct 1604 ms 165020 KB Output is correct
17 Correct 2122 ms 197588 KB Output is correct
18 Correct 2044 ms 191440 KB Output is correct
19 Correct 1683 ms 218880 KB Output is correct
20 Correct 2029 ms 196740 KB Output is correct
21 Correct 2161 ms 228560 KB Output is correct
22 Correct 2126 ms 228340 KB Output is correct
23 Correct 2055 ms 197552 KB Output is correct
24 Correct 779 ms 196964 KB Output is correct
25 Correct 2074 ms 188140 KB Output is correct
26 Correct 2215 ms 228216 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 31 ms 64964 KB Output is correct
2 Correct 54 ms 64964 KB Output is correct
3 Correct 629 ms 64956 KB Output is correct
4 Correct 27 ms 64972 KB Output is correct
5 Correct 34 ms 65024 KB Output is correct
6 Correct 29 ms 64996 KB Output is correct
7 Correct 1547 ms 146268 KB Output is correct
8 Correct 1470 ms 164580 KB Output is correct
9 Correct 1488 ms 153620 KB Output is correct
10 Correct 1661 ms 166044 KB Output is correct
11 Correct 1657 ms 165360 KB Output is correct
12 Correct 28 ms 64964 KB Output is correct
13 Correct 1521 ms 152976 KB Output is correct
14 Correct 646 ms 134792 KB Output is correct
15 Correct 1567 ms 144132 KB Output is correct
16 Correct 1604 ms 165020 KB Output is correct
17 Correct 2122 ms 197588 KB Output is correct
18 Correct 2044 ms 191440 KB Output is correct
19 Correct 1683 ms 218880 KB Output is correct
20 Correct 2029 ms 196740 KB Output is correct
21 Correct 2161 ms 228560 KB Output is correct
22 Correct 2126 ms 228340 KB Output is correct
23 Correct 2055 ms 197552 KB Output is correct
24 Correct 779 ms 196964 KB Output is correct
25 Correct 2074 ms 188140 KB Output is correct
26 Correct 2215 ms 228216 KB Output is correct
27 Correct 7590 ms 305112 KB Output is correct
28 Correct 6728 ms 281400 KB Output is correct
29 Correct 6599 ms 318652 KB Output is correct
30 Correct 6829 ms 295232 KB Output is correct
31 Correct 7247 ms 327284 KB Output is correct
32 Correct 7682 ms 328108 KB Output is correct
33 Correct 875 ms 198012 KB Output is correct
34 Correct 7572 ms 292832 KB Output is correct
35 Correct 7260 ms 329284 KB Output is correct

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 31 ms 64964 KB Output is correct
2 Correct 54 ms 64964 KB Output is correct
3 Correct 629 ms 64956 KB Output is correct
4 Correct 27 ms 64972 KB Output is correct
5 Correct 34 ms 65024 KB Output is correct
6 Correct 29 ms 64996 KB Output is correct
7 Correct 1547 ms 146268 KB Output is correct
8 Correct 1470 ms 164580 KB Output is correct
9 Correct 1488 ms 153620 KB Output is correct
10 Correct 1661 ms 166044 KB Output is correct
11 Correct 1657 ms 165360 KB Output is correct
12 Correct 28 ms 64964 KB Output is correct
13 Correct 1521 ms 152976 KB Output is correct
14 Correct 646 ms 134792 KB Output is correct
15 Correct 1567 ms 144132 KB Output is correct
16 Correct 1604 ms 165020 KB Output is correct
17 Correct 2122 ms 197588 KB Output is correct
18 Correct 2044 ms 191440 KB Output is correct
19 Correct 1683 ms 218880 KB Output is correct
20 Correct 2029 ms 196740 KB Output is correct
21 Correct 2161 ms 228560 KB Output is correct
22 Correct 2126 ms 228340 KB Output is correct
23 Correct 2055 ms 197552 KB Output is correct
24 Correct 779 ms 196964 KB Output is correct
25 Correct 2074 ms 188140 KB Output is correct
26 Correct 2215 ms 228216 KB Output is correct
27 Correct 7590 ms 305112 KB Output is correct
28 Correct 6728 ms 281400 KB Output is correct
29 Correct 6599 ms 318652 KB Output is correct
30 Correct 6829 ms 295232 KB Output is correct
31 Correct 7247 ms 327284 KB Output is correct
32 Correct 7682 ms 328108 KB Output is correct
33 Correct 875 ms 198012 KB Output is correct
34 Correct 7572 ms 292832 KB Output is correct
35 Correct 7260 ms 329284 KB Output is correct
36 Execution timed out 9053 ms 158084 KB Time limit exceeded
37 Halted 0 ms 0 KB -