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Submission #143158

# Submission time Handle Problem Language Result Execution time Memory
143158 2019-08-13T09:18:55 Z tmwilliamlin168 The Big Prize (IOI17_prize) C++14
100 / 100
 49 ms 1232 KB 
#include "prize.h"
#include <bits/stdc++.h>
using namespace std;

const int mxN=2e5;
int n, a, ft[mxN+1];
vector<int> v;

void upd(int i) {
	for(++i; i<=n; i+=i&-i)
		++ft[i];
}

int qry(int i) {
	int r=0;
	for(; i; i-=i&-i)
		r+=ft[i];
	return r;
}

int dc(int l=0, int r=n-1, int sl=0, int sr=a) {
	if(l>r)
		return -1;
	int ml=(l+r)/2, mr=ml;
	vector<int> b;
	for(; ; --ml) {
		if(ml<l) {
			b[1]=sl+mr-ml;
			break;
		}
		if(qry(r+1)-qry(l)>=sr-sl)
			return -1;
		if(qry(ml+1)-qry(ml))
			continue;
		b=ask(ml);
		int c=b[0]+b[1];
		if(!c)
			return ml;
		if(c>a) {
			a=c;
			for(int vi : v)
				upd(vi);
			v.clear();
			return dc();
		}
		if(c==a) {
			v.push_back(ml);
			b[1]=b[0]+mr-ml;
			break;
		}
		if(c<a)
			upd(ml);
	}
	int rl=dc(l, ml-1, sl, b[0]);
	return ~rl?rl:dc(mr+1, r, b[1], sr);
}

int find_best(int N) {
	n=N;
	vector<int> b=ask(n-1);
	a=b[0]+b[1];
	return a?dc():n-1;
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 320 KB Output is correct
2 Correct 2 ms 312 KB Output is correct
3 Correct 2 ms 316 KB Output is correct
4 Correct 2 ms 320 KB Output is correct
5 Correct 2 ms 248 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 248 KB Output is correct
8 Correct 2 ms 316 KB Output is correct
9 Correct 2 ms 292 KB Output is correct
10 Correct 2 ms 248 KB Output is correct

Subtask #2
80.0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 248 KB Output is correct
2 Correct 2 ms 312 KB Output is correct
3 Correct 3 ms 312 KB Output is correct
4 Correct 2 ms 248 KB Output is correct
5 Correct 3 ms 396 KB Output is correct
6 Correct 2 ms 400 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 248 KB Output is correct
10 Correct 2 ms 252 KB Output is correct
11 Correct 4 ms 376 KB Output is correct
12 Correct 2 ms 504 KB Output is correct
13 Correct 7 ms 632 KB Output is correct
14 Correct 3 ms 248 KB Output is correct
15 Correct 5 ms 444 KB Output is correct
16 Correct 37 ms 936 KB Output is correct
17 Correct 2 ms 380 KB Output is correct
18 Correct 26 ms 1160 KB Output is correct
19 Correct 2 ms 248 KB Output is correct
20 Correct 12 ms 376 KB Output is correct
21 Correct 11 ms 692 KB Output is correct
22 Correct 4 ms 376 KB Output is correct
23 Correct 2 ms 248 KB Output is correct
24 Correct 2 ms 376 KB Output is correct
25 Correct 20 ms 796 KB Output is correct
26 Correct 21 ms 760 KB Output is correct
27 Correct 3 ms 248 KB Output is correct
28 Correct 37 ms 1016 KB Output is correct
29 Correct 28 ms 888 KB Output is correct
30 Correct 43 ms 1232 KB Output is correct
31 Correct 2 ms 248 KB Output is correct
32 Correct 5 ms 440 KB Output is correct
33 Correct 2 ms 248 KB Output is correct
34 Correct 17 ms 632 KB Output is correct
35 Correct 3 ms 356 KB Output is correct
36 Correct 7 ms 508 KB Output is correct
37 Correct 3 ms 432 KB Output is correct
38 Correct 2 ms 396 KB Output is correct
39 Correct 20 ms 644 KB Output is correct
40 Correct 37 ms 1064 KB Output is correct
41 Correct 15 ms 940 KB Output is correct
42 Correct 18 ms 832 KB Output is correct
43 Correct 23 ms 632 KB Output is correct
44 Correct 20 ms 632 KB Output is correct
45 Correct 17 ms 632 KB Output is correct
46 Correct 2 ms 248 KB Output is correct
47 Correct 11 ms 668 KB Output is correct
48 Correct 24 ms 896 KB Output is correct
49 Correct 5 ms 376 KB Output is correct
50 Correct 47 ms 1064 KB Output is correct
51 Correct 24 ms 632 KB Output is correct
52 Correct 2 ms 244 KB Output is correct
53 Correct 3 ms 376 KB Output is correct
54 Correct 14 ms 628 KB Output is correct
55 Correct 2 ms 312 KB Output is correct
56 Correct 49 ms 1040 KB Output is correct
57 Correct 29 ms 896 KB Output is correct
58 Correct 33 ms 908 KB Output is correct
59 Correct 26 ms 736 KB Output is correct
60 Correct 24 ms 736 KB Output is correct
61 Correct 3 ms 376 KB Output is correct
62 Correct 2 ms 248 KB Output is correct
63 Correct 3 ms 376 KB Output is correct
64 Correct 3 ms 248 KB Output is correct
65 Correct 3 ms 376 KB Output is correct
66 Correct 8 ms 392 KB Output is correct
67 Correct 3 ms 248 KB Output is correct
68 Correct 7 ms 308 KB Output is correct
69 Correct 7 ms 376 KB Output is correct
70 Correct 3 ms 252 KB Output is correct
71 Correct 48 ms 1144 KB Output is correct
72 Correct 7 ms 632 KB Output is correct
73 Correct 37 ms 1212 KB Output is correct
74 Correct 45 ms 1144 KB Output is correct
75 Correct 3 ms 456 KB Output is correct
76 Correct 41 ms 1040 KB Output is correct
77 Correct 43 ms 1088 KB Output is correct
78 Correct 7 ms 604 KB Output is correct
79 Correct 23 ms 1064 KB Output is correct
80 Correct 43 ms 1072 KB Output is correct
81 Correct 37 ms 1032 KB Output is correct
82 Correct 43 ms 1004 KB Output is correct
83 Correct 3 ms 504 KB Output is correct
84 Correct 25 ms 1080 KB Output is correct
85 Correct 31 ms 1016 KB Output is correct
86 Correct 6 ms 896 KB Output is correct
87 Correct 3 ms 640 KB Output is correct
88 Correct 7 ms 760 KB Output is correct
89 Correct 9 ms 760 KB Output is correct
90 Correct 2 ms 376 KB Output is correct
91 Correct 4 ms 768 KB Output is correct
92 Correct 7 ms 376 KB Output is correct
93 Correct 5 ms 504 KB Output is correct
94 Correct 6 ms 504 KB Output is correct
95 Correct 4 ms 536 KB Output is correct
96 Correct 4 ms 624 KB Output is correct
97 Correct 2 ms 376 KB Output is correct