oj.uz

Submission #295705

# Submission time Handle Problem Language Result Execution time Memory
295705 2020-09-09T20:25:35 Z b00n0rp Parrots (IOI11_parrots) C++17
99 / 100
 12 ms 1792 KB 
#include "encoder.h"
#include "encoderlib.h"
#include<bits/stdc++.h>
using namespace std;

#define REP(i,n) for(int i = 0; i < n; i ++)
#define FOR(i,a,b) for(int i = a; i < b; i ++)
#define vi vector<int>
#define pb push_back
#define F first
#define S second

void encode(int N, int M[]){
	int n = N;
	int a[105];
	REP(i,n) a[i] = M[i];

	vi v1,v2;

	REP(i,n){
		int times = 1;
		if(i >= 32) times++;

		int cur = (i%32)*8;
		REP(j,8){
			if(a[i]&(1<<j)){
				REP(k,times){
					v1.pb(cur+j);
				}
			}
			else{
				REP(k,times){
					v2.pb(cur+j);
				}
			}
		}
	}
	if(v1.size() <= 6*n){
		for(auto x:v1) send(x);
	}
	else{
		map<int,int> m;
		for(auto x:v2) m[x]++;
		bool f = 0;
		for(auto x:m){
			if(x.S >= 3){
				m[x.F] += 1;
				f = 1;
				break;
			}
		}
		if(!f){
			send(0);
			send(0);
			send(0);
			send(0);
			send(0);
		}
		for(auto x:m){
			REP(y,x.S) send(x.F);
		}
	}
}

#include "decoder.h"
#include "decoderlib.h"
#include<bits/stdc++.h>
using namespace std;

#define REP(i,n) for(int i = 0; i < n; i ++)
#define FOR(i,a,b) for(int i = a; i < b; i ++)
#define F first
#define S second

void decode(int N, int L, int X[]){
	int ans[105];
	REP(i,N) ans[i] = 0;

	map<int,int> m;
	REP(i,L) m[X[i]]++;

	bool flag = 0;
	for(auto x:m){
		if(x.S >= 4){
			flag = 1;
			m[x.F] -= 1;
			if(m[x.F] >= 4) m[x.F] -= 4;
			break;
		}
	}

	for(auto x:m){
		int ind = x.F/8;
		if(x.S&2) ans[ind+32] += (1<<(x.F%8));
		if(x.S&1) ans[ind] += (1<<(x.F%8));
	}
	if(!flag){
		REP(i,N) output(ans[i]);
	}
	else{
		REP(i,N) output(255-ans[i]);
	}
}

Compilation message

encoder.cpp: In function 'void encode(int, int*)':
encoder.cpp:38:15: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   38 |  if(v1.size() <= 6*n){
      |     ~~~~~~~~~~^~~~~~

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 900 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1536 KB Output is correct
2 Correct 2 ms 1536 KB Output is correct
3 Correct 2 ms 1536 KB Output is correct
4 Correct 4 ms 1536 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1536 KB Output is correct
2 Correct 2 ms 1536 KB Output is correct
3 Correct 3 ms 1536 KB Output is correct
4 Correct 3 ms 1536 KB Output is correct

Subtask #4
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1536 KB Output is correct
2 Correct 3 ms 1536 KB Output is correct
3 Correct 4 ms 1792 KB Output is correct
4 Correct 6 ms 1536 KB Output is correct
5 Correct 4 ms 1536 KB Output is correct
6 Correct 4 ms 1536 KB Output is correct

Subtask #5
18.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1536 KB Output is correct - P = 4.625000
2 Correct 5 ms 1536 KB Output is correct - P = 4.718750
3 Correct 4 ms 1536 KB Output is correct - P = 5.000000
4 Partially correct 8 ms 1792 KB Output is partially correct - P = 5.860000
5 Partially correct 11 ms 1792 KB Output is partially correct - P = 6.000000
6 Partially correct 11 ms 1792 KB Output is partially correct - P = 6.000000
7 Partially correct 12 ms 1792 KB Output is partially correct - P = 6.000000