Submission #78829

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
78829	2018-10-09T05:46:00 Z	wleung_bvg	Highway Tolls (IOI18_highway)	C++14	0 / 100	61 ms	7920 KB

highway

#include "highway.h"
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define eb emplace_back
#define mp make_pair
#define f first
#define s second
#define all(a) (a).begin(),(a).end()
#define For(i,a,b) for(auto i=(a);i<(b);i++)
#define FOR(i,b) For(i,0,b)
#define Rev(i,a,b) for(auto i=(a);i>(b);i--)
#define REV(i,a) Rev(i,a,-1)
#define FORE(i,a) for(auto&&i:a)
#define sz(a) (int((a).size()))
#define MIN(a,b) ((a)=min((a),(b)))
#define MAX(a,b) ((a)=max((a),(b)))
using ll=long long;using ld=long double;using uint=unsigned int;using ull=unsigned long long;
using pii=pair<int,int>;using pll=pair<ll,ll>;using pill=pair<int,ll>;using plli=pair<ll,int>;using pdd=pair<double,double>;using pld=pair<ld,ld>;
constexpr const char nl='\n',sp=' ';constexpr const int INT_INF=0x3f3f3f3f;constexpr const ll LL_INF=0x3f3f3f3f3f3f3f3f;
constexpr const double D_INF=numeric_limits<double>::infinity();constexpr const ld LD_INF=numeric_limits<ld>::infinity();constexpr const double EPS=1e-9;

const int MAXN = 90005;

int q[MAXN], to[MAXN];
vector<int> adj[MAXN];

void find_pair(int N, vector<int> U, vector<int> V, int A, int B) {
    int M = sz(U), front, back, s = 0, lo = 0, hi = M - 1, mid, v;
    FOR(i, M) {
        adj[U[i]].pb(i);
        adj[V[i]].pb(i);
    }
    vector<int> Q(M, 0);
    ll DA = ask(Q);
    while (lo <= hi) {
        mid = lo + (hi - lo) / 2;
        FOR(i, M) Q[i] = i > mid;
        if (ask(Q) == DA) lo = mid + 1;
        else hi = mid - 1;
    }
    assert(hi != -1);
    s = U[hi];
    vector<int> ans;
    FOR(_, 2) {
        front = 0, back = 0, lo = 1, hi = N - 1;
        fill(to, to + N, -1);
        to[q[back++] = s] = -INT_INF;
        while (front < back) FORE(e, adj[v = q[front++]]) if (to[v ^ U[e] ^ V[e]] == -1) to[q[back++] = v ^ U[e] ^ V[e]] = e;
        while (lo <= hi) {
            mid = lo + (hi - lo) / 2;
            fill(all(Q), 0);
            For(i, mid, N) Q[to[q[i]]] = 1;
            if (ask(Q) == DA) hi = mid - 1;
            else lo = mid + 1;
        }
        ans.pb(s = q[hi]);
    }
    answer(ans[0], ans[1]);
}

Subtask #1
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Runtime error	7 ms	4856 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
2	Halted	0 ms	0 KB	-

Subtask #2
0 / 7.0

#	Verdict	Execution time	Memory	Grader output
1	Runtime error	8 ms	4904 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
2	Halted	0 ms	0 KB	-

Subtask #3
0 / 6.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	39 ms	2916 KB	Output is correct
2	Correct	40 ms	3620 KB	Output is correct
3	Runtime error	61 ms	7920 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
4	Halted	0 ms	0 KB	-