이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
#define MASK(i) (1LL << (i))
#define GETBIT(mask, i) (((mask) >> (i)) & 1)
#define ALL(v) (v).begin(), (v).end()
ll max(ll a, ll b){return (a > b) ? a : b;}
ll min(ll a, ll b){return (a < b) ? a : b;}
ll LASTBIT(ll mask){return (mask) & (-mask);}
int pop_cnt(ll mask){return __builtin_popcountll(mask);}
int ctz(ll mask){return __builtin_ctzll(mask);}
int logOf(ll mask){return 63 - __builtin_clzll(mask);}
mt19937_64 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
// mt19937_64 rng(69);
ll rngesus(ll l, ll r){return l + (ull) rng() % (r - l + 1);}
template <class T1, class T2>
bool maximize(T1 &a, T2 b){
if (a < b) {a = b; return true;}
return false;
}
template <class T1, class T2>
bool minimize(T1 &a, T2 b){
if (a > b) {a = b; return true;}
return false;
}
template <class T>
void printArr(T& container, string separator = " ", string finish = "\n", ostream &out = cout){
for(auto item: container) out << item << separator;
out << finish;
}
template <class T>
void remove_dup(vector<T> &a){
sort(ALL(a));
a.resize(unique(ALL(a)) - a.begin());
}
const int N = 101, K = 1001;
const ll INF = 1e18 + 69;
int n, m, k;
pair<int, int> store[N][K];
ll graph[N][N], profit[N][N], ohio_dis[N][N];
int main(void){
ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
cin >> n >> m >> k;
for(int i= 1; i<=n; ++i){
for(int j = 0; j<k; ++j) cin >> store[i][j].first >> store[i][j].second;
}
for(int i = 1; i<=n; ++i)
for(int j = i + 1; j<=n; ++j) graph[i][j] = graph[j][i] = INF;
for(int i = 0; i<m; ++i){
int u, v, w; cin >> u >> v >> w;
minimize(graph[u][v], w);
}
for(int k = 1; k<=n; ++k) for(int i = 1; i<=n; ++i) for(int j = 1; j<=n; ++j) minimize(graph[i][j], graph[i][k] + graph[k][j]);
for(int i = 1; i<=n; ++i)
for(int j = 1; j<=n; ++j) if (i != j){
for(int t = 0; t < k; ++t) if (store[i][t].first != -1 && store[j][t].second != -1){
maximize(profit[i][j], store[j][t].second - store[i][t].first);
}
}
int l = 0, r = 1e9;
while(l < r){
int mid = (l + r + 1) >> 1;
for(int i = 1; i<=n; ++i) for(int j = 1; j<=n; ++j) ohio_dis[i][j] = INF;
for(int i = 1; i<=n; ++i)
for(int j = 1; j<=n; ++j) if (i != j) minimize(ohio_dis[i][j], graph[i][j] * mid - profit[i][j]);
for(int k = 1; k<=n; ++k) for(int i = 1; i<=n; ++i) for(int j = 1; j<=n; ++j)
minimize(ohio_dis[i][j], ohio_dis[i][k] + ohio_dis[k][j]);
bool check = false;
for(int i = 1; i<=n; ++i) if (ohio_dis[i][i] <= 0) check = true;
if (check) l = mid;
else r = mid - 1;
}
cout << l << "\n";
return 0;
}
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |