oj.uz

Submission #117462

# Submission time Handle Problem Language Result Execution time Memory
117462 2019-06-16T01:40:56 Z tjd229 The Big Prize (IOI17_prize) C++14
100 / 100
 50 ms 5300 KB 
#include "prize.h"
#include <vector>
#define pii pair<int,int>
using namespace std;
const int seg = 511;//473-1
int pre;
int nc;//1+2+3+4
int call;
vector<int> v[200000];
void my_ask(int i) {
	if (v[i].empty()) v[i] = ask(i),++call;
}
int search(int l,int r,int tgt) {
	int t = -1;
	while (l <= r) {
		int m = (l + r) >> 1;
		my_ask(m);
		if (v[m][0] + v[m][1] != nc) {
			t = m, r = m - 1;
			if (tgt == 1) return t;
		}
		else if (v[m][0] == pre) l = m + 1,tgt=v[m][0]-pre;		
		else r = m - 1;
	}
	return t;
}
int find_best(int n) {
	if (n <= 5000) {
		for (int i = 0; i < n; ++i) {
			my_ask(i);
			if (v[i][0] + v[i][1] == 0) return i;
		}
	}
	vector<pii > g;
	int i = 0, j = seg-1;
	int last = 0;
	while (i < n) {
		if (j >= n) j = n-1;
		my_ask(j);
		int s = v[j][0] + v[j][1];
		if (s == 0) return j;
		if (nc < s) nc = s;
		g.push_back({i,j});
		i += seg; j += seg;
	}
	for (i = 0; i < n && call <= 472; ++i) {
		my_ask(i);
		int s = v[i][0] + v[i][1];
		if (s == 0) return i;
		if (nc < s) nc = s;
	}
	for (;v[last].size();++last) {
		int s = v[last][0] + v[last][1];
		if (nc > s) ++pre;
	}
	for (i = 0; i < g.size();) {
		int e = g[i].second;
		if (last < g[i].first) last = g[i].first;
		if (e < last || (v[e][0]+v[e][1]==nc&&v[e][0]==pre)) {
			++i;
			continue;
		}
		int t = search(last,e,v[e][0]-pre);
		if (v[t][0] + v[t][1] == 0) return t;
		++pre;
		last = t+1;
	}
	return 0;
}

Compilation message

prize.cpp: In function 'int find_best(int)':
prize.cpp:56:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (i = 0; i < g.size();) {
              ~~^~~~~~~~~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 5136 KB Output is correct
2 Correct 13 ms 5032 KB Output is correct
3 Correct 8 ms 5032 KB Output is correct
4 Correct 9 ms 4992 KB Output is correct
5 Correct 11 ms 4992 KB Output is correct
6 Correct 8 ms 5128 KB Output is correct
7 Correct 8 ms 4992 KB Output is correct
8 Correct 11 ms 4992 KB Output is correct
9 Correct 8 ms 5136 KB Output is correct
10 Correct 11 ms 4992 KB Output is correct

Subtask #2
80.0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 5008 KB Output is correct
2 Correct 11 ms 5112 KB Output is correct
3 Correct 7 ms 5136 KB Output is correct
4 Correct 10 ms 4912 KB Output is correct
5 Correct 7 ms 5024 KB Output is correct
6 Correct 7 ms 5108 KB Output is correct
7 Correct 8 ms 5032 KB Output is correct
8 Correct 10 ms 4992 KB Output is correct
9 Correct 8 ms 5136 KB Output is correct
10 Correct 7 ms 5036 KB Output is correct
11 Correct 12 ms 4992 KB Output is correct
12 Correct 9 ms 4992 KB Output is correct
13 Correct 14 ms 5112 KB Output is correct
14 Correct 13 ms 4992 KB Output is correct
15 Correct 22 ms 4992 KB Output is correct
16 Correct 47 ms 5116 KB Output is correct
17 Correct 13 ms 5028 KB Output is correct
18 Correct 23 ms 5264 KB Output is correct
19 Correct 8 ms 5136 KB Output is correct
20 Correct 32 ms 5140 KB Output is correct
21 Correct 24 ms 4992 KB Output is correct
22 Correct 12 ms 4992 KB Output is correct
23 Correct 12 ms 5136 KB Output is correct
24 Correct 8 ms 5136 KB Output is correct
25 Correct 17 ms 5216 KB Output is correct
26 Correct 16 ms 5092 KB Output is correct
27 Correct 8 ms 5136 KB Output is correct
28 Correct 34 ms 5240 KB Output is correct
29 Correct 37 ms 5112 KB Output is correct
30 Correct 34 ms 5160 KB Output is correct
31 Correct 9 ms 5120 KB Output is correct
32 Correct 9 ms 5140 KB Output is correct
33 Correct 5 ms 4992 KB Output is correct
34 Correct 12 ms 5168 KB Output is correct
35 Correct 11 ms 5112 KB Output is correct
36 Correct 16 ms 4992 KB Output is correct
37 Correct 11 ms 5024 KB Output is correct
38 Correct 10 ms 4992 KB Output is correct
39 Correct 15 ms 5196 KB Output is correct
40 Correct 30 ms 5224 KB Output is correct
41 Correct 16 ms 5100 KB Output is correct
42 Correct 23 ms 5300 KB Output is correct
43 Correct 31 ms 5112 KB Output is correct
44 Correct 21 ms 5112 KB Output is correct
45 Correct 12 ms 5172 KB Output is correct
46 Correct 8 ms 5136 KB Output is correct
47 Correct 14 ms 5196 KB Output is correct
48 Correct 27 ms 5164 KB Output is correct
49 Correct 11 ms 4992 KB Output is correct
50 Correct 22 ms 5240 KB Output is correct
51 Correct 19 ms 4992 KB Output is correct
52 Correct 8 ms 5028 KB Output is correct
53 Correct 9 ms 4992 KB Output is correct
54 Correct 13 ms 5188 KB Output is correct
55 Correct 9 ms 5120 KB Output is correct
56 Correct 30 ms 5156 KB Output is correct
57 Correct 17 ms 5124 KB Output is correct
58 Correct 38 ms 4992 KB Output is correct
59 Correct 15 ms 5212 KB Output is correct
60 Correct 25 ms 5120 KB Output is correct
61 Correct 7 ms 5136 KB Output is correct
62 Correct 7 ms 5136 KB Output is correct
63 Correct 11 ms 4972 KB Output is correct
64 Correct 8 ms 5136 KB Output is correct
65 Correct 12 ms 4992 KB Output is correct
66 Correct 14 ms 4992 KB Output is correct
67 Correct 8 ms 5144 KB Output is correct
68 Correct 8 ms 5148 KB Output is correct
69 Correct 8 ms 5140 KB Output is correct
70 Correct 7 ms 5108 KB Output is correct
71 Correct 33 ms 5208 KB Output is correct
72 Correct 13 ms 4992 KB Output is correct
73 Correct 38 ms 5160 KB Output is correct
74 Correct 37 ms 5120 KB Output is correct
75 Correct 11 ms 4992 KB Output is correct
76 Correct 21 ms 5220 KB Output is correct
77 Correct 32 ms 5104 KB Output is correct
78 Correct 11 ms 4992 KB Output is correct
79 Correct 25 ms 5112 KB Output is correct
80 Correct 31 ms 5180 KB Output is correct
81 Correct 36 ms 5160 KB Output is correct
82 Correct 50 ms 5112 KB Output is correct
83 Correct 12 ms 5120 KB Output is correct
84 Correct 25 ms 5240 KB Output is correct
85 Correct 33 ms 5148 KB Output is correct
86 Correct 21 ms 5104 KB Output is correct
87 Correct 11 ms 5112 KB Output is correct
88 Correct 47 ms 5112 KB Output is correct
89 Correct 22 ms 5224 KB Output is correct
90 Correct 8 ms 5128 KB Output is correct
91 Correct 35 ms 5092 KB Output is correct
92 Correct 45 ms 5112 KB Output is correct
93 Correct 18 ms 5216 KB Output is correct
94 Correct 46 ms 5084 KB Output is correct
95 Correct 41 ms 5112 KB Output is correct
96 Correct 28 ms 5128 KB Output is correct
97 Correct 32 ms 5056 KB Output is correct