oj.uz

Submission #173124

# Submission time Handle Problem Language Result Execution time Memory
173124 2020-01-03T12:03:07 Z songc Rope (JOI17_rope) C++14
0 / 100
 45 ms 47880 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long LL;
typedef pair<int,int> pii;

int N, M;
int A[1010101];
int Ecnt[1010101], E[1010101], EM, ES;
int Ocnt[1010101], O[1010101], OM, OS;
vector<int> Ec[1010101], Oc[1010101];

int Eup(int k, int v){
	Ecnt[E[k]]--;
	if (!Ecnt[EM]) EM--;
	else if (EM == ES && Ecnt[EM]<=1) ES--;
	else if (!Ecnt[ES]) ES--;
	E[k] += v;
	if (EM < E[k]) EM = E[k];
	else if (ES < E[k]) ES = E[k];
	Ecnt[E[k]]++;
}

int Oup(int k, int v){
	Ocnt[O[k]]--;
	if (!Ocnt[OM]) OM--;
	else if (OM == OS && Ocnt[OM]<=1) OS--;
	else if (!Ocnt[OS]) OS--;
	O[k] += v;
	if (OM < O[k]) OM = O[k];
	else if (OS < O[k]) OS = O[k];
	Ocnt[O[k]]++;
}

int main(){
	//freopen("in.txt", "r", stdin);
	scanf("%d %d", &N, &M);
	if (M == 1){
		puts("0");
		return 0;
	}
	Ecnt[0]=Ocnt[0]=M;
	for (int i=1; i<=N; i++) scanf("%d", &A[i]);
	for (int i=1; i+1<=N; i+=2){
		Eup(A[i], 1);
		Eup(A[i+1], 1);
		if (A[i] != A[i+1]){
			Ec[A[i]].push_back(A[i+1]);
			Ec[A[i+1]].push_back(A[i]);
		}
	}
	for (int i=2; i+1<=N; i+=2){
		Oup(A[i], 1);
		Oup(A[i+1], 1);
		if (A[i] != A[i+1]){
			Oc[A[i]].push_back(A[i+1]);
			Oc[A[i+1]].push_back(A[i]);
		}
	}

	if (N & 1){
		Eup(A[N], 1);
		Oup(A[1], 1);
	}
	else{
		Oup(A[1], 1);
		Oup(A[N], 1);
	}

	for (int i=1; i<=M; i++){
		int ans=0;
		for (int x : Ec[i]) Eup(x, -1);
		for (int x : Oc[i]) Oup(x, -1);

		if (E[i] == EM) ans = max(ans, E[i]+ES);
		else ans = max(ans, E[i]+EM);
		if (O[i] == OM) ans = max(ans, O[i]+OS);
		else ans = max(ans, O[i]+OM);
		printf("%d\n", N-ans);

		for (int x : Ec[i]) Eup(x, 1);
		for (int x : Oc[i]) Oup(x, 1);
	}
	return 0;
}

Compilation message

rope.cpp: In function 'int Eup(int, int)':
rope.cpp:21:1: warning: no return statement in function returning non-void [-Wreturn-type]
 }
 ^
rope.cpp: In function 'int Oup(int, int)':
rope.cpp:32:1: warning: no return statement in function returning non-void [-Wreturn-type]
 }
 ^
rope.cpp: In function 'int main()':
rope.cpp:36:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d", &N, &M);
  ~~~~~^~~~~~~~~~~~~~~~~
rope.cpp:42:32: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for (int i=1; i<=N; i++) scanf("%d", &A[i]);
                           ~~~~~^~~~~~~~~~~~~

Subtask #1
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 45 ms 47880 KB Output is correct
2 Correct 45 ms 47864 KB Output is correct
3 Correct 45 ms 47864 KB Output is correct
4 Incorrect 45 ms 47836 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #2
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 45 ms 47880 KB Output is correct
2 Correct 45 ms 47864 KB Output is correct
3 Correct 45 ms 47864 KB Output is correct
4 Incorrect 45 ms 47836 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 45 ms 47880 KB Output is correct
2 Correct 45 ms 47864 KB Output is correct
3 Correct 45 ms 47864 KB Output is correct
4 Incorrect 45 ms 47836 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #4
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 45 ms 47880 KB Output is correct
2 Correct 45 ms 47864 KB Output is correct
3 Correct 45 ms 47864 KB Output is correct
4 Incorrect 45 ms 47836 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 45 ms 47880 KB Output is correct
2 Correct 45 ms 47864 KB Output is correct
3 Correct 45 ms 47864 KB Output is correct
4 Incorrect 45 ms 47836 KB Output isn't correct
5 Halted 0 ms 0 KB -