| # | Time | Username | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 372380 | arwaeystoamneg | Teams (IOI15_teams) | C++17 | 0 ms | 0 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include "teams.h"
/*
ID: awesome35
LANG: C++14
TASK: vans
*/
#define _CRT_SECURE_NO_WARNINGS
#include<bits/stdc++.h>
#include<unordered_set>
#include<unordered_map>
#include<chrono>
using namespace std;
typedef pair<int, int> pii;
typedef long long ll;
typedef pair<ll, ll> pll;
typedef long double ld;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<pair<int, int>> vpi;
typedef vector<pair<ll, ll>> vpll;
#define FOR(i,a,b) for (int i = (a); i < (b); ++i)
#define F0R(i,a) FOR(i,0,a)
#define ROF(i,a,b) for (int i = (b)-1; i >= (a); --i)
#define R0F(i,a) ROF(i,0,a)
#define trav(a,x) for (auto& a: x)
#define pb push_back
#define mp make_pair
#define rsz resize
#define sz(x) int(x.size())
#define all(x) x.begin(),x.end()
#define f first
#define s second
#define cont continue
#define endl '\n'
#define ednl '\n'
#define test int testc;cin>>testc;while(testc--)
#define pr(a, b) trav(x,a)cerr << x << b; cerr << endl;
#define message cout << "Hello World" << endl;
//const int dx[4] = { 1,0,-1,0 }, dy[4] = { 0,1,0,-1 }; // for every grid problem!!
const ll linf = 4000000000000000000LL;
const ll inf = 1000000007;//998244353
const ld pi = 3.1415926535;
void pv(vi a) { trav(x, a)cout << x << " "; cout << endl; }void pv(vll a) { trav(x, a)cout << x << " "; cout << endl; }void pv(vector<vi>a) {
F0R(i, sz(a)) { cout << i << endl; pv(a[i]); cout << endl; }
}void pv(vector<vll>a) { F0R(i, sz(a)) { cout << i << endl; pv(a[i]); }cout << endl; }void pv(vector<string>a) { trav(x, a)cout << x << endl; cout << endl; }
void setIO(string s) {
ios_base::sync_with_stdio(0); cin.tie(0);
if (sz(s))
{
freopen((s + ".in").c_str(), "r", stdin);
if (s != "ioi")
freopen((s + ".out").c_str(), "w", stdout);
}
}
template <int MAXV, class T = int> struct Dinic {
const static bool SCALING = false; // non-scaling = V^2E, Scaling=VElog(U) with higher constant
int lim = 1;
const T INF = numeric_limits<T>::max();
struct edge {
int to, rev;
T cap, flow;
};
int s = 0, t = MAXV - 1;
int level[MAXV], ptr[MAXV];
vector<edge> adj[MAXV];
void addEdge(int a, int b, T cap, bool isDirected = true) {
adj[a].push_back({ b, sz(adj[b]), cap, 0 });
adj[b].push_back({ a, sz(adj[a]) - 1, isDirected ? 0 : cap, 0 });
}
bool bfs() {
queue<int> q({ s });
fill(level, level + MAXV, -1);
level[s] = 0;
while (!q.empty() && level[t] == -1) {
int v = q.front();
q.pop();
for (auto e : adj[v]) {
if (level[e.to] == -1 && e.flow < e.cap && (!SCALING || e.cap - e.flow >= lim)) {
q.push(e.to);
level[e.to] = level[v] + 1;
}
}
}
return level[t] != -1;
}
T dfs(int v, T flow) {
if (v == t || !flow)
return flow;
for (; ptr[v] < adj[v].size(); ptr[v]++) {
edge& e = adj[v][ptr[v]];
if (level[e.to] != level[v] + 1)
continue;
if (T pushed = dfs(e.to, min(flow, e.cap - e.flow))) {
e.flow += pushed;
adj[e.to][e.rev].flow -= pushed;
return pushed;
}
}
return 0;
}
long long calc() {
long long flow = 0;
for (lim = SCALING ? (1 << 30) : 1; lim > 0; lim >>= 1) {
while (bfs()) {
fill(ptr, ptr + MAXV, 0);
while (T pushed = dfs(s, INF))
flow += pushed;
}
}
return flow;
}
};
const int MAX = 100;
int n, m;
vi a, b, k;
void init(int A, int* B, int* c)
{
n = A;
a.rsz(n);
b.rsz(n);
F0R(i, n)a[i] = B[i], a[i]--;
F0R(i, n)b[i] = c[i], b[i]--;
}
bool sub1()
{
Dinic<MAX * 2 + 2> g;
F0R(i, n)g.addEdge(0, i + 1, 1);
int sum = 0;
vi count(MAX);
trav(x, k)
{
sum += x + 1;
count[x]++;
}
F0R(i, n)
{
FOR(j, a[i], b[i] + 1)g.addEdge(i + 1, MAX + 1 + j, 1);
}
F0R(i, MAX)g.addEdge(MAX + 1 + i, MAX * 2 + 1, count[i] * (i + 1));
return g.calc() == sum;
}
bool sub2()
{
return false;
}
bool can(int A, int* B)
{
m = A;
k.rsz(m);
F0R(i, m)k[i] = B[i], k[i]--;
if (n <= 100)
{
return sub1();
}
else
{
return sub2();
}
}