oj.uz

Submission #113705

# Submission time Handle Problem Language Result Execution time Memory
113705 2019-05-28T01:37:18 Z thebes Cities (BOI16_cities) C++14
51 / 100
 6000 ms 262144 KB 
#include <bits/stdc++.h>
using namespace std;

const int MN = 1e5+5;
typedef long long ll;
typedef pair<ll,ll> pii;
struct reeee{ll n, m, d;};

ll n, m, k, i, x, y, w, vs[MN][1<<6], ans = 1LL<<60;
vector<pii> adj[MN]; vector<ll> heh;
struct pq{bool operator()(const reeee&i,const reeee&j){return i.d>j.d;}};
priority_queue<reeee,vector<reeee>,pq> q;

int main(){
    for(scanf("%lld%lld%lld",&n,&k,&m),i=1;i<=k;i++){
        scanf("%lld",&x);
        heh.push_back(x);
    }
    for(i=1;i<=m;i++){
        scanf("%lld%lld%lld",&x,&y,&w);
        adj[x].push_back({y,w});
        adj[y].push_back({x,w});
    }
    memset(vs,0x3f,sizeof(vs));
    for(i=0;i<heh.size();i++)
        q.push({heh[i], 1<<i, 0});
    while(q.size()){
        auto v = q.top(); q.pop();
        if(v.m==(1<<k)-1) ans = min(ans, v.d);
        if(vs[v.n][v.m]<(1LL<<60)) continue;
        vs[v.n][v.m] = v.d;
        for(int mm=0;mm<(1<<k);mm++){
            if(v.d+vs[v.n][mm]<vs[v.n][v.m|mm]){
                q.push({v.n, v.m|mm, v.d+vs[v.n][mm]});
            }
        }
        for(auto w : adj[v.n]){
            if(v.d+w.second<vs[w.first][v.m]){
                q.push({w.first, v.m, v.d+w.second});
            }
        }
    }
    printf("%lld\n",ans);
    return 0;
}

Compilation message

cities.cpp: In function 'int main()':
cities.cpp:25:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(i=0;i<heh.size();i++)
             ~^~~~~~~~~~~
cities.cpp:15:39: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for(scanf("%lld%lld%lld",&n,&k,&m),i=1;i<=k;i++){
         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~
cities.cpp:16:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%lld",&x);
         ~~~~~^~~~~~~~~~~
cities.cpp:20:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%lld%lld%lld",&x,&y,&w);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 42 ms 52856 KB Output is correct
2 Correct 41 ms 52728 KB Output is correct
3 Correct 40 ms 52732 KB Output is correct
4 Correct 41 ms 52856 KB Output is correct
5 Correct 41 ms 53112 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1630 ms 92236 KB Output is correct
2 Correct 1629 ms 91604 KB Output is correct
3 Correct 756 ms 72664 KB Output is correct
4 Correct 790 ms 114436 KB Output is correct
5 Correct 610 ms 73888 KB Output is correct
6 Correct 346 ms 89920 KB Output is correct
7 Correct 48 ms 53240 KB Output is correct
8 Correct 42 ms 53112 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 60 ms 54536 KB Output is correct
2 Correct 58 ms 54516 KB Output is correct
3 Correct 51 ms 53784 KB Output is correct
4 Correct 53 ms 53752 KB Output is correct

Subtask #4
0 / 23.0

# Verdict Execution time Memory Grader output
1 Execution timed out 6030 ms 262144 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 26.0

# Verdict Execution time Memory Grader output
1 Runtime error 4074 ms 262144 KB Execution killed with signal 9 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -