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Submission #29534

# Submission time Handle Problem Language Result Execution time Memory
29534 2017-07-20T05:31:57 Z 서규호(#1242) Lightning Conductor (POI11_pio) C++14
36 / 100
 1000 ms 11912 KB 
#include <bits/stdc++.h>
#include <unistd.h>

#define pii pair<int,int>
#define pll pair<lld,lld>
#define pb push_back
#define next nextt
#define left leftt
#define right rightt
#define lld long long
#define Inf 1000000000
#define Mod 1000000007
#define Linf 1000000000000000000LL
#define get gett

using namespace std;

int N,ans;
int a[500002];

struct data{
	int s,e,size;
	pii *q;
	void insert(int x){
		while(s != (e%(size-1)) && q[e-1].first <= a[x]){
			e--;
			if(e == 0) e = size-1;
		}
		if(e == size-1){
			q[0] = pii(a[x],x);
			e = 1;
		}else{
			q[e] = pii(a[x],x);
			e++;
		}
	}
	int get(){
		return q[s].first;
	}
	void erase(int x){
		if(q[s].second == x){
			s++;
			if(s == size-1) s = 0;
		}
	}
}S1[800],S2[800];

void calcans(int num){
	ans = 0;
	int e = sqrt(num-1);
	if(e*e != num-1) e++;
	for(int i=1; i<=e; i++){
		ans = max(ans,S1[i].get()+i-a[num]);
	}
	e = sqrt(N-num);
	if(e*e != N-num) e++;
	for(int i=1; i<=e; i++){
		ans = max(ans,S2[i].get()+i-a[num]);
	}
}

int main(){
    //freopen("input.txt","r",stdin);
	srand(time(NULL));
	scanf("%d",&N);
	for(int i=1; i<=sqrt(N)+1; i++){
		S1[i].size = S2[i].size = i*2+2;
		S1[i].s = S1[i].e = S2[i].s = S2[i].e = 1;
		S1[i].q = (pii*)malloc(sizeof(pii)*S1[i].size);
		S2[i].q = (pii*)malloc(sizeof(pii)*S2[i].size);
	}
	for(int i=1; i<=N; i++){
		scanf("%d",&a[i]);
	}
	for(int i=2; i<=N; i++){
		int t = sqrt(i-1);
		if(t*t != i-1) t++;
		S2[t].insert(i);
	}
	calcans(1);
	printf("%d\n",ans);
	for(int i=2; i<=N; i++){
		S1[1].erase(i);
		S1[1].insert(i-1);
		for(int j=1; i-1-j*j>=1; j++){
			int t = i-1-j*j;
			S1[j].erase(t);
			S1[j+1].insert(t);
		}
		for(int j=1; i+j*j<=N; j++){
			int t = i+j*j;
			S2[j+1].erase(t);
			S2[j].insert(t);
		}
		calcans(i);
		printf("%d\n",ans);
	}

	return 0;
}

Compilation message

pio.cpp: In function 'int main()':
pio.cpp:65:16: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&N);
                ^
pio.cpp:73:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&a[i]);
                    ^

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 4024 KB Output is correct

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 4024 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 4024 KB Output is correct

Subtask #4
0 / 9.0

# Verdict Execution time Memory Grader output
1 Incorrect 189 ms 4552 KB Output isn't correct

Subtask #5
0 / 9.0

# Verdict Execution time Memory Grader output
1 Incorrect 473 ms 4816 KB Output isn't correct

Subtask #6
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 713 ms 5080 KB Output is correct
2 Correct 369 ms 5080 KB Output is correct
3 Correct 626 ms 5080 KB Output is correct

Subtask #7
0 / 9.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1000 ms 5612 KB Execution timed out
2 Halted 0 ms 0 KB -

Subtask #8
0 / 9.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1000 ms 7604 KB Execution timed out
2 Halted 0 ms 0 KB -

Subtask #9
0 / 9.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1000 ms 9612 KB Execution timed out
2 Halted 0 ms 0 KB -

Subtask #10
0 / 9.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1000 ms 11912 KB Execution timed out
2 Halted 0 ms 0 KB -

Subtask #11
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1000 ms 11912 KB Execution timed out
2 Halted 0 ms 0 KB -