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Submission #460454

# Submission time Handle Problem Language Result Execution time Memory
460454 2021-08-09T07:01:09 Z idas Cheap flights (LMIO18_pigus_skrydziai) C++11
12 / 100
 3000 ms 53912 KB 
#include <bits/stdc++.h>
#define FOR(i, begin, end) for(int i = (begin); i < (end); i++)
#define FAST_IO ios_base::sync_with_stdio(0); cin.tie(nullptr); cout.tie(nullptr)
#define F first
#define S second
#define PB push_back
#define MP make_pair
#define SZ(x) ((int)((x).size()))
#define LE(vec) vec[vec.size()-1]
#define TSTS int t; cin >> t; while(t--)solve()

const int INF = 1e9;
const long long LINF = 1e18;
const long double PI = asin(1)*2;
const int MOD = 1e9+7;

using namespace std;
typedef pair<int, int> pii;
typedef vector<int> vi;
typedef map<int, int> mii;
typedef long long ll;
typedef long double ld;

void setIO()
{
    FAST_IO;
}

void setIO (string s)
 {
    setIO();
 	freopen((s+".in").c_str(),"r",stdin);
 	freopen((s+".out").c_str(),"w",stdout);
}

const int N=3e5+10, M=5e5+10;

int n, m;
ll cn[N], ans;
vi ad[N];
map<pii, ll> con;

int main()
{
    setIO();
    cin >> n >> m;
    FOR(i, 0, m)
    {
        int a, b, c;
        cin >> a >> b >> c;
        cn[a-1]+=c;
        cn[b-1]+=c;
        ad[a-1].PB(b-1);
        ad[b-1].PB(a-1);
        con[{min(a-1, b-1), max(a-1, b-1)}]=c;
    }

    FOR(i, 0, n)
    {
        ans=max(ans, cn[i]);
    }

    FOR(i, 0, n)
    {
        vector<pii> full;
        for(auto x : ad[i]){
            for(auto y : ad[x]){
                full.PB({y, x});
            }
        }

        sort(full.begin(), full.end());
        for(auto x : ad[i]){
            int l=0, r=(int)full.size()-1;
            while(l<r){
                int m=(l+r+1)/2;
                if(full[m].F<=x) l=m;
                else r=m-1;
            }

            if(full[l].F==x){
                //cout << i+1 << " " << x+1 << " " << full[l].S+1 << "\n";
                ll val=con[{min(i, x), max(i, x)}]
                +con[{min(x, full[l].S), max(x, full[l].S)}]
                +con[{min(i, full[l].S), max(i, full[l].S)}];
                ans=max(ans, val);
            }
        }
    }

    cout << ans;
}

Compilation message

pigus_skrydziai.cpp: In function 'void setIO(std::string)':
pigus_skrydziai.cpp:32:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   32 |   freopen((s+".in").c_str(),"r",stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
pigus_skrydziai.cpp:33:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   33 |   freopen((s+".out").c_str(),"w",stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 7244 KB Output is correct
2 Correct 5 ms 7244 KB Output is correct
3 Correct 5 ms 7372 KB Output is correct
4 Correct 5 ms 7364 KB Output is correct
5 Correct 5 ms 7372 KB Output is correct
6 Correct 856 ms 9928 KB Output is correct
7 Correct 6 ms 7372 KB Output is correct
8 Correct 5 ms 7372 KB Output is correct
9 Correct 5 ms 7372 KB Output is correct
10 Correct 6 ms 7372 KB Output is correct
11 Correct 8 ms 7372 KB Output is correct
12 Correct 6 ms 7372 KB Output is correct
13 Correct 6 ms 7276 KB Output is correct
14 Correct 6 ms 7244 KB Output is correct
15 Correct 5 ms 7368 KB Output is correct
16 Correct 4 ms 7244 KB Output is correct
17 Correct 5 ms 7372 KB Output is correct
18 Correct 9 ms 7372 KB Output is correct
19 Correct 14 ms 7500 KB Output is correct
20 Correct 6 ms 7392 KB Output is correct
21 Correct 6 ms 7372 KB Output is correct

Subtask #2
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 7244 KB Output is correct
2 Correct 5 ms 7244 KB Output is correct
3 Correct 5 ms 7372 KB Output is correct
4 Correct 5 ms 7364 KB Output is correct
5 Correct 5 ms 7372 KB Output is correct
6 Correct 856 ms 9928 KB Output is correct
7 Correct 6 ms 7372 KB Output is correct
8 Correct 5 ms 7372 KB Output is correct
9 Correct 5 ms 7372 KB Output is correct
10 Correct 6 ms 7372 KB Output is correct
11 Correct 8 ms 7372 KB Output is correct
12 Correct 6 ms 7372 KB Output is correct
13 Correct 6 ms 7276 KB Output is correct
14 Correct 6 ms 7244 KB Output is correct
15 Correct 5 ms 7368 KB Output is correct
16 Correct 4 ms 7244 KB Output is correct
17 Correct 5 ms 7372 KB Output is correct
18 Correct 9 ms 7372 KB Output is correct
19 Correct 14 ms 7500 KB Output is correct
20 Correct 6 ms 7392 KB Output is correct
21 Correct 6 ms 7372 KB Output is correct
22 Execution timed out 3039 ms 53912 KB Time limit exceeded
23 Halted 0 ms 0 KB -

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 283 ms 30712 KB Output is correct
2 Correct 671 ms 42328 KB Output is correct
3 Correct 180 ms 18872 KB Output is correct
4 Correct 370 ms 30276 KB Output is correct
5 Correct 884 ms 38928 KB Output is correct
6 Execution timed out 3050 ms 21456 KB Time limit exceeded
7 Halted 0 ms 0 KB -

Subtask #4
0 / 47.0

# Verdict Execution time Memory Grader output
1 Correct 283 ms 30712 KB Output is correct
2 Correct 671 ms 42328 KB Output is correct
3 Correct 180 ms 18872 KB Output is correct
4 Correct 370 ms 30276 KB Output is correct
5 Correct 884 ms 38928 KB Output is correct
6 Execution timed out 3050 ms 21456 KB Time limit exceeded
7 Halted 0 ms 0 KB -