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Submission #148762

# Submission time Handle Problem Language Result Execution time Memory
148762 2019-09-01T05:04:06 Z 还没编好(#3801, cauchysheep, fjzzq2002, apiad) Crosses on the Grid (FXCUP4_cross) C++17
100 / 100
 122 ms 6636 KB 
#include "cross.h"
#include <bits/stdc++.h>
using namespace std;
#define rep(i,a,n) for (int i=a;i<n;i++)
#define per(i,a,n) for (int i=n-1;i>=a;i--)
#define pb push_back
#define mp make_pair
#define all(x) (x).begin(),(x).end()
#define fi first
#define se second
#define SZ(x) ((int)(x).size())
typedef vector<int> VI;
typedef long long ll;
typedef pair<int,int> PII;
const ll mod=1000000007;
ll powmod(ll a,ll b) {ll res=1;a%=mod; assert(b>=0); for(;b;b>>=1){if(b&1)res=res*a%mod;a=a*a%mod;}return res;}
ll gcd(ll a,ll b) { return b?gcd(b,a%b):a;}
// head

const int N=201000;
int n;
pair<int,int> p[N];

ll sqr(ll x) { return x*x; }

long long SelectCross(int K, std::vector<int> I, std::vector<int> O) {
	n=SZ(I);
	for (int i=0;i<n;i++) p[i]=mp(O[i],I[i]);
	sort(p,p+n); reverse(p,p+n);
	priority_queue<int,vector<int>,greater<int>> q;
	ll ans=0;
	for (int i=0;i<n;i++) {
		while (q.size()>K-1) q.pop();
		if (q.size()==K-1) {
			ans=max(ans,sqr(p[i].first)-sqr(
				max(p[i].first-min(p[i].second,(K==1?(1<<30):q.top())),0)));
		}
		q.push(p[i].second);
	}
	return ans;
}

Compilation message

cross.cpp: In function 'long long int SelectCross(int, std::vector<int>, std::vector<int>)':
cross.cpp:33:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   while (q.size()>K-1) q.pop();
          ~~~~~~~~^~~~
cross.cpp:34:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if (q.size()==K-1) {
       ~~~~~~~~^~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 6 ms 384 KB Output is correct
4 Correct 6 ms 384 KB Output is correct
5 Correct 12 ms 640 KB Output is correct
6 Correct 114 ms 5224 KB Output is correct
7 Correct 115 ms 5228 KB Output is correct
8 Correct 111 ms 5224 KB Output is correct

Subtask #2
55.0 / 55.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 6 ms 384 KB Output is correct
4 Correct 6 ms 384 KB Output is correct
5 Correct 12 ms 640 KB Output is correct
6 Correct 114 ms 5224 KB Output is correct
7 Correct 115 ms 5228 KB Output is correct
8 Correct 111 ms 5224 KB Output is correct
9 Correct 6 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 256 KB Output is correct
12 Correct 12 ms 512 KB Output is correct
13 Correct 63 ms 2928 KB Output is correct
14 Correct 118 ms 5228 KB Output is correct
15 Correct 113 ms 5100 KB Output is correct
16 Correct 115 ms 5224 KB Output is correct

Subtask #3
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 6 ms 384 KB Output is correct
4 Correct 6 ms 384 KB Output is correct
5 Correct 12 ms 640 KB Output is correct
6 Correct 114 ms 5224 KB Output is correct
7 Correct 115 ms 5228 KB Output is correct
8 Correct 111 ms 5224 KB Output is correct
9 Correct 6 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 256 KB Output is correct
12 Correct 12 ms 512 KB Output is correct
13 Correct 63 ms 2928 KB Output is correct
14 Correct 118 ms 5228 KB Output is correct
15 Correct 113 ms 5100 KB Output is correct
16 Correct 115 ms 5224 KB Output is correct
17 Correct 6 ms 384 KB Output is correct
18 Correct 6 ms 384 KB Output is correct
19 Correct 12 ms 768 KB Output is correct
20 Correct 66 ms 2928 KB Output is correct
21 Correct 96 ms 4204 KB Output is correct
22 Correct 120 ms 5100 KB Output is correct
23 Correct 117 ms 5224 KB Output is correct
24 Correct 122 ms 5220 KB Output is correct
25 Correct 119 ms 6512 KB Output is correct
26 Correct 115 ms 6636 KB Output is correct