oj.uz

Submission #603633

# Submission time Handle Problem Language Result Execution time Memory
603633 2022-07-24T09:11:31 Z MrDeboo Stranded Far From Home (BOI22_island) C++17
10 / 100
 1000 ms 22764 KB 
#include <bits/stdc++.h>
#define int long long
using namespace std;
signed main(){
    int n,m;
    cin>>n>>m;
    int val[n+1];
    for(int i=1;i<=n;i++)cin>>val[i];
    vector<int>vct[n+1];
    while(m--){
        int x,y;
        cin>>x>>y;
        vct[x].push_back(y);
        vct[y].push_back(x);
    }
    string s(n+1,'1');
    vector<bool>done(n+1);
    srand(43654634);
    vector<int>vv,V;
    for(int i=1;i<=n;i++)vv.push_back(i);
    while(vv.size()){
        swap(vv.back(),vv[rand()%vv.size()]);
        V.push_back(vv.back());
        vv.pop_back();
    }
    for(auto &i:V){
        if(done[i])continue;
        vector<int>v;
        vector<bool>vis(n+1);
        priority_queue<pair<int,int>,vector<pair<int,int>>,greater<pair<int,int>>>pq;
        pq.push({0,i});
        int tot=0;
        bool bl=1;
        while(pq.size()){
            int a=pq.top().second,b=pq.top().first;
            pq.pop();
            if(vis[a])continue;
            vis[a]=1;
            if(b>tot)break;
            v.push_back(a);
            tot+=val[a];
            for(auto &w:vct[a]){
                pq.push({val[w],w});
            }
        }
        if(v.size()==n){
            deque<pair<int,int>>dq={{i,val[i]}};
            for(auto &w:v)vis[w]=0;
            while(dq.size()){
                int a=dq.front().first,b=dq.front().second;
                dq.pop_front();
                if(vis[a])continue;
                vis[a]=1;
                if(val[a]>=b){
                    done[a]=1;
                    s[a]='1';
                    b=val[a];
                }
                for(auto &w:vct[a]){
                    dq.push_back({w,b});
                }
            }
        }else{
            for(auto &i:v){
                done[i]=1;
                s[i]='0';
            }
        }
    }
    cout<<s.substr(1,n);
}

Compilation message

island.cpp: In function 'int main()':
island.cpp:46:20: warning: comparison of integer expressions of different signedness: 'std::vector<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   46 |         if(v.size()==n){
      |            ~~~~~~~~^~~
island.cpp:33:14: warning: unused variable 'bl' [-Wunused-variable]
   33 |         bool bl=1;
      |              ^~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 103 ms 512 KB Output is correct
5 Correct 125 ms 496 KB Output is correct
6 Correct 3 ms 468 KB Output is correct
7 Correct 111 ms 516 KB Output is correct
8 Correct 70 ms 504 KB Output is correct
9 Correct 3 ms 468 KB Output is correct
10 Correct 104 ms 500 KB Output is correct
11 Correct 94 ms 504 KB Output is correct
12 Correct 116 ms 544 KB Output is correct
13 Correct 3 ms 468 KB Output is correct
14 Correct 6 ms 468 KB Output is correct

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Execution timed out 1084 ms 22764 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Execution timed out 1085 ms 19932 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #4
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Execution timed out 1084 ms 20916 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #5
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 103 ms 512 KB Output is correct
5 Correct 125 ms 496 KB Output is correct
6 Correct 3 ms 468 KB Output is correct
7 Correct 111 ms 516 KB Output is correct
8 Correct 70 ms 504 KB Output is correct
9 Correct 3 ms 468 KB Output is correct
10 Correct 104 ms 500 KB Output is correct
11 Correct 94 ms 504 KB Output is correct
12 Correct 116 ms 544 KB Output is correct
13 Correct 3 ms 468 KB Output is correct
14 Correct 6 ms 468 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Execution timed out 1084 ms 22764 KB Time limit exceeded
18 Halted 0 ms 0 KB -