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Submission #53966

# Submission time Handle Problem Language Result Execution time Memory
53966 2018-07-02T05:55:41 Z 김세빈(#1455) Pyramid Base (IOI08_pyramid_base) C++11
35 / 100
 5000 ms 77716 KB 
#include <bits/stdc++.h>

using namespace std;

int T[2202020], L[2202020];
vector <int> V[1010101];
int X1[404040], X2[404040], Y1[404040], Y2[404040], C[404040];
int n, m, c, k, sz;

void add(int p, int s, int e, int l, int r, int v)
{
	if(r < s || e < l) return;
	if(l <= s && e <= r){
		L[p] += v;
		return;
	}
	
	L[p<<1] += L[p], L[p<<1|1] += L[p];
	L[p] = 0;
	
	add(p<<1, s, s+e>>1, l, r, v);
	add(p<<1|1, (s+e>>1)+1, e, l, r, v);
	
	T[p] = min(T[p<<1] + L[p<<1], T[p<<1|1] + L[p<<1|1]);
}

bool check(int t)
{
	int i, j, p;
	
	for(i=1;i<=n-t+1;i++) V[i].clear();
	for(i=1;i<sz+sz;i++) T[i] = L[i] = 0;
	
	for(i=1;i<=k;i++){
		V[max(1, X1[i]-t+1)].push_back(i);
		V[min(n-t+1, X2[i])+1].push_back(-i);
	}
	
	for(i=1;i<=n-t+1;i++){
		for(j=0;j<V[i].size();j++){
			p = V[i][j];
			if(p > 0) add(1, 1, m-t+1, Y1[p]-t+1, Y2[p], 1);
			else add(1, 1, m-t+1, Y1[-p]-t+1, Y2[-p], -1);
		}
		
//		printf("%d %d\n",i,T[1]+L[1]);
		
		if(T[1] + L[1] == 0) return 1;
	}
	
	return 0;
}

int main()
{
//	freopen("input.txt", "r", stdin);
	
	int i, s, e;
	
	scanf("%d%d%d%d", &n, &m, &c, &k);
	
	for(sz=1;sz<=n && sz<=m;sz<<=1);
	
	for(i=1;i<=k;i++){
		scanf("%d%d%d%d%d", X1+i, Y1+i, X2+i, Y2+i, C+i);
	}
	
	for(s=1,e=min(n,m); s<=e;){
		if(check(s+e>>1)) s = (s+e>>1) + 1;
		else e = (s+e>>1) - 1;
	}
	
	printf("%d\n", s-1);
	
	return 0;
}

Compilation message

pyramid_base.cpp: In function 'void add(int, int, int, int, int, int)':
pyramid_base.cpp:21:16: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  add(p<<1, s, s+e>>1, l, r, v);
               ~^~
pyramid_base.cpp:22:16: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  add(p<<1|1, (s+e>>1)+1, e, l, r, v);
               ~^~
pyramid_base.cpp: In function 'bool check(int)':
pyramid_base.cpp:40:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(j=0;j<V[i].size();j++){
           ~^~~~~~~~~~~~
pyramid_base.cpp: In function 'int main()':
pyramid_base.cpp:69:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   if(check(s+e>>1)) s = (s+e>>1) + 1;
            ~^~
pyramid_base.cpp:69:27: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   if(check(s+e>>1)) s = (s+e>>1) + 1;
                          ~^~
pyramid_base.cpp:70:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   else e = (s+e>>1) - 1;
             ~^~
pyramid_base.cpp:60:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d%d%d", &n, &m, &c, &k);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
pyramid_base.cpp:65:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d%d%d%d", X1+i, Y1+i, X2+i, Y2+i, C+i);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 24056 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 24168 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 24376 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 24708 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 52 ms 26788 KB Output is correct

Subtask #6
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 166 ms 41264 KB Output is correct
2 Correct 330 ms 41464 KB Output is correct

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 346 ms 41552 KB Output is correct
2 Correct 212 ms 41552 KB Output is correct

Subtask #8
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 98 ms 41552 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #9
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 357 ms 41552 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #10
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 1194 ms 51996 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #11
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 1304 ms 54236 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #12
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 1711 ms 56204 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #13
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 5028 ms 73332 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #14
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 5007 ms 76032 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #15
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 5019 ms 77716 KB Time limit exceeded
2 Halted 0 ms 0 KB -