Submission #498820

#TimeUsernameProblemLanguageResultExecution timeMemory
498820aurimsCheap flights (LMIO18_pigus_skrydziai)C++14
0 / 100
106 ms262148 KiB
#include <bits/stdc++.h> #define debug cout << "alio\n"; #define pb push_back #define ll long long #define MAXN 5000 #define ff first #define ss second using namespace std; /* input 5 4 1 2 1 1 3 2 1 4 1 2 4 1 */ struct miestas { vector<int> kaimynai; vector<ll> pelnas; }; vector<miestas> miestai; int main() { int N, M; cin >> N >> M; miestai.resize(N); for(int i = 0; i < N; i++) { miestai[i].pelnas.resize(N); for(int j = 0; j < N; j++) { miestai[i].pelnas[j] = -1; } } for(int i = 0; i < M; i++) { int a, b; ll p; cin >> a >> b >> p; miestai[a-1].kaimynai.pb(b-1); miestai[b-1].kaimynai.pb(a-1); miestai[a-1].pelnas[b-1] = p; miestai[b-1].pelnas[a-1] = p; } int mx = -1; // perrenkam visas zvaigzdes for(int i = 0; i < N; i++) { int sum = 0; for(int sidx : miestai[i].kaimynai) { sum += miestai[i].pelnas[sidx]; } if(sum > mx) mx = sum; } // perrenkam visus trikampius for(int i = 0; i < N; i++) { int sum = 0; int mxind_1 = 0; int mxind_2 = 0; for(int sidx : miestai[i].kaimynai) { if(miestai[i].pelnas[sidx] > miestai[i].pelnas[mxind_1]) { mxind_1 = sidx; } else if(miestai[i].pelnas[sidx] > miestai[i].pelnas[mxind_2]) { mxind_2 = sidx; } } if(miestai[mxind_1].pelnas[mxind_2] != -1) sum += miestai[mxind_1].pelnas[mxind_2] + miestai[i].pelnas[mxind_1] + miestai[i].pelnas[mxind_2]; if(sum > mx) mx = sum; } cout << mx << '\n'; }
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