Submission #171093

#	Time	Username	Problem	Language	Result	Execution time	Memory
171093		dennisstar	Robots (IOI13_robots)	C++11	100 / 100	2043 ms	12636 KiB

robots

#include "robots.h"
#include <bits/stdc++.h>
#define fi first
#define se second
#define ryan bear
#define all(V) ((V).begin()), ((V).end())
using namespace std;
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef long double ld;
typedef vector<int> vim;
typedef vector<ll> vlm;

vector<pii> ar;
priority_queue<int, vector<int>, less<int> > pq;

int putaway(int A, int B, int T, int X[], int Y[], int W[], int S[]) {
	sort(X, X+A); sort(Y, Y+B);
	for (int i=0; i<T; i++) ar.push_back({W[i], S[i]});
	sort(all(ar));

	for (int i=0; i<T; i++) if (X[A-1]<=W[i]&&Y[B-1]<=S[i]) return -1;
	int s=0, e=T;
	int x;
	while (s+1<e) {
		ll md=(s+e+1)/2;
		int i, j, k;
		for (i=0, j=0; i<A; i++) {
			for (; X[i]>ar[j].fi&&j<T; j++) pq.push(ar[j].se);
			for (k=0; !pq.empty()&&k<md; k++) pq.pop();
		}
		for (; j<T; j++) pq.push(ar[j].se);
		for (i=B-1; i>=0; i--) {
			for (j=0; !pq.empty()&&j<md&&pq.top()<Y[i]; j++) pq.pop();
		}
		if (!pq.empty()) s=md;
		else e=md;
		while(!pq.empty()) pq.pop();
	}
	return e;
}

Compilation message (stderr)

robots.cpp: In function 'int putaway(int, int, int, int*, int*, int*, int*)':
robots.cpp:25:6: warning: unused variable 'x' [-Wunused-variable]
  int x;
      ^

• Subtask 1: 14 / 14
• Subtask 2: 14 / 14
• Subtask 3: 25 / 25
• Subtask 4: 37 / 37
• Subtask 5: 10 / 10