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Submission #924231

# Submission time Handle Problem Language Result Execution time Memory
924231 2024-02-08T16:42:40 Z dwuy Cheap flights (LMIO18_pigus_skrydziai) C++14
12 / 100
 3000 ms 47204 KB 
#include <bits/stdc++.h>

#define fastIO ios_base::sync_with_stdio(false); cin.tie(NULL)
#define file(a) freopen(a".inp","r",stdin); freopen(a".out", "w",stdout)
#define fi first
#define se second
#define endl "\n"
#define len(s) int32_t(s.length())
#define MASK(k)(1LL<<(k))
#define TASK "test"
#define int long long

using namespace std;

typedef tuple<int, int, int> tpiii;
typedef pair<double, double> pdd;
typedef pair<int, int> pii;
typedef long long ll;

const long long OO = 1e18;
const int MOD = 1e9 + 7;
const int INF = 1e9;
const int MX = 300005;

int n, m;
int sum[MX];
int cnt[MX];
vector<pii> G[MX];
tpiii edges[MX<<1];
bitset<MX> ok = 0;
int cost[MX];

void nhap(){
    cin >> n >> m;
    for(int i=1; i<=m; i++){
        int u, v, c;
        cin >> u >> v >> c;
        G[u].push_back({v, c});
        G[v].push_back({u, c});
        edges[i] = {c, u, v};
        sum[u] += c;
        sum[v] += c;
        cnt[u]++;
        cnt[v]++;
    }
}

void solve(){
    int ans = 0;
    for(int i=1; i<=n; i++) ans = max(ans, sum[i]);
    for(int i=1; i<=n; i++) if(cnt[i]*cnt[i]>=n){
        for(pii &tmp: G[i]){
            int j, c;
            tie(j, c) = tmp;
            ok[j] = 1;
            cost[j] = c;
            for(pii &tmp2: G[j]){
                int k, f;
                tie(k, f) = tmp2;
                if(ok[k]) ans = max(ans, c + f + cost[k]);
            }
        }
        for(pii &tmp: G[i]){
            int f, k;
            tie(f, k) = tmp;
            ok[f] = cost[f] = 0;
        }
    }
    sort(edges+1, edges+1+m, greater<tpiii>());
    for(int i=1, f=0; i<=m; i++){
        if(cnt[i]*cnt[i]>=n) continue;
        else f++;
        int c, u, v;
        tie(c, u, v) = edges[i];
        for(pii &tmp: G[u]){
            int f, k;
            tie(f, k) = tmp;
            ok[f] = 1;
            cost[f] = k;
        }
        for(pii &tmp: G[v]){
            int f, k;
            tie(f, k) = tmp;
            if(ok[f]) ans = max(ans, c + k + cost[f]);
        }
        for(pii &tmp: G[u]){
            int f, k;
            tie(f, k) = tmp;
            ok[f] = cost[f] = 0;
        }
    }
    cout << ans;
}

int32_t main(){
    fastIO;
    //file(TASK);

    nhap();
    solve();

    return 0;
}

Compilation message

pigus_skrydziai.cpp: In function 'void solve()':
pigus_skrydziai.cpp:66:29: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   66 |             ok[f] = cost[f] = 0;
      |                     ~~~~~~~~^~~
pigus_skrydziai.cpp:89:29: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   89 |             ok[f] = cost[f] = 0;
      |                     ~~~~~~~~^~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 14684 KB Output is correct
2 Correct 2 ms 14684 KB Output is correct
3 Correct 2 ms 14684 KB Output is correct
4 Correct 2 ms 14936 KB Output is correct
5 Correct 3 ms 14680 KB Output is correct
6 Correct 38 ms 15548 KB Output is correct
7 Correct 3 ms 14680 KB Output is correct
8 Correct 2 ms 14684 KB Output is correct
9 Correct 2 ms 14684 KB Output is correct
10 Correct 3 ms 14684 KB Output is correct
11 Correct 2 ms 14684 KB Output is correct
12 Correct 2 ms 14684 KB Output is correct
13 Correct 2 ms 14684 KB Output is correct
14 Correct 2 ms 14684 KB Output is correct
15 Correct 2 ms 14684 KB Output is correct
16 Correct 2 ms 14684 KB Output is correct
17 Correct 2 ms 14684 KB Output is correct
18 Correct 3 ms 14684 KB Output is correct
19 Correct 3 ms 14940 KB Output is correct
20 Correct 3 ms 14684 KB Output is correct
21 Correct 2 ms 14780 KB Output is correct

Subtask #2
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 14684 KB Output is correct
2 Correct 2 ms 14684 KB Output is correct
3 Correct 2 ms 14684 KB Output is correct
4 Correct 2 ms 14936 KB Output is correct
5 Correct 3 ms 14680 KB Output is correct
6 Correct 38 ms 15548 KB Output is correct
7 Correct 3 ms 14680 KB Output is correct
8 Correct 2 ms 14684 KB Output is correct
9 Correct 2 ms 14684 KB Output is correct
10 Correct 3 ms 14684 KB Output is correct
11 Correct 2 ms 14684 KB Output is correct
12 Correct 2 ms 14684 KB Output is correct
13 Correct 2 ms 14684 KB Output is correct
14 Correct 2 ms 14684 KB Output is correct
15 Correct 2 ms 14684 KB Output is correct
16 Correct 2 ms 14684 KB Output is correct
17 Correct 2 ms 14684 KB Output is correct
18 Correct 3 ms 14684 KB Output is correct
19 Correct 3 ms 14940 KB Output is correct
20 Correct 3 ms 14684 KB Output is correct
21 Correct 2 ms 14780 KB Output is correct
22 Correct 987 ms 47204 KB Output is correct
23 Execution timed out 3008 ms 41296 KB Time limit exceeded
24 Halted 0 ms 0 KB -

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 74 ms 29664 KB Output is correct
2 Correct 184 ms 40020 KB Output is correct
3 Correct 44 ms 24148 KB Output is correct
4 Correct 98 ms 31860 KB Output is correct
5 Correct 180 ms 39252 KB Output is correct
6 Correct 479 ms 20824 KB Output is correct
7 Correct 66 ms 36116 KB Output is correct
8 Correct 82 ms 38392 KB Output is correct
9 Correct 4 ms 18268 KB Output is correct
10 Correct 472 ms 20980 KB Output is correct
11 Execution timed out 3056 ms 37468 KB Time limit exceeded
12 Halted 0 ms 0 KB -

Subtask #4
0 / 47.0

# Verdict Execution time Memory Grader output
1 Correct 74 ms 29664 KB Output is correct
2 Correct 184 ms 40020 KB Output is correct
3 Correct 44 ms 24148 KB Output is correct
4 Correct 98 ms 31860 KB Output is correct
5 Correct 180 ms 39252 KB Output is correct
6 Correct 479 ms 20824 KB Output is correct
7 Correct 66 ms 36116 KB Output is correct
8 Correct 82 ms 38392 KB Output is correct
9 Correct 4 ms 18268 KB Output is correct
10 Correct 472 ms 20980 KB Output is correct
11 Execution timed out 3056 ms 37468 KB Time limit exceeded
12 Halted 0 ms 0 KB -