| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 713061 |
2023-03-21T02:30:17 Z |
lam |
The Big Prize (IOI17_prize) |
C++14 |
|
107 ms |
1440 KB |
#include <bits/stdc++.h>
#include "prize.h"
using namespace std;
typedef pair<int,int> ii;
typedef pair<ii,int> iii;
#define ff first
#define ss second
const int maxn = 2e5 + 10;
int n;
int ans;
int rt; ii bound;
int f[maxn];
bool dau[maxn];
//vector <int> ask(int x)
//{
// cout<<x<<endl;
// int l,r; cin>>l>>r;
// return {l,r};
//}
void update(int x, int val)
{
x++;
while (x<=n)
{
f[x]+=val;
x+=(x&-x);
}
}
int get(int x)
{
x++;
int temp=0;
while (x>0)
{
temp+=f[x];
x-=(x&-x);
}
return temp;
}
int find_best(int N)
{
n=N;
int it = min(n,474);
rt=-1;
for (int i=0; i<it; i++)
{
vector <int> tmp = ask(i);
int sum = tmp[0] + tmp[1];
if (sum==0) return i;
if (rt==-1||bound.ff+bound.ss<sum)
{
rt = i;
bound.ff = tmp[0]; bound.ss = tmp[1];
}
}
fill_n(f,n+1,0);
for (int i=0; i<bound.ss; i++)
{
int l=rt+1; int r=n-1;
int j = -1;
int val;
while (l<=r)
{
int mid=(l+r)/2;
vector <int> tmp = ask(mid);
if (dau[mid])
{
l=mid+1;
continue;
}
if (tmp[0] + tmp[1] != bound.ff + bound.ss || tmp[0] - get(mid) != bound.ff)
{
j = mid;
val = tmp[0] + tmp[1];
r=mid-1;
}
else l=mid+1;
}
dau[j]=1;
// cout<<j<<" :: "<<val<<endl;
update(j,1);
if (val==0) return j;
}
}
//signed main()
//{
// int n; cin>>n;
// cout<<find_best(n)<<"!!"<<endl;
//}
Compilation message
prize.cpp: In function 'int find_best(int)':
prize.cpp:84:1: warning: control reaches end of non-void function [-Wreturn-type]
84 | }
| ^
prize.cpp:82:9: warning: 'val' may be used uninitialized in this function [-Wmaybe-uninitialized]
82 | if (val==0) return j;
| ^~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
976 KB |
Output is correct |
| 2 |
Correct |
5 ms |
1056 KB |
Output is correct |
| 3 |
Correct |
3 ms |
1072 KB |
Output is correct |
| 4 |
Correct |
4 ms |
968 KB |
Output is correct |
| 5 |
Correct |
4 ms |
1068 KB |
Output is correct |
| 6 |
Correct |
1 ms |
300 KB |
Output is correct |
| 7 |
Correct |
3 ms |
1072 KB |
Output is correct |
| 8 |
Correct |
7 ms |
1064 KB |
Output is correct |
| 9 |
Correct |
7 ms |
1068 KB |
Output is correct |
| 10 |
Correct |
5 ms |
1072 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
4 ms |
1072 KB |
Output is correct |
| 2 |
Correct |
3 ms |
1060 KB |
Output is correct |
| 3 |
Correct |
7 ms |
968 KB |
Output is correct |
| 4 |
Correct |
5 ms |
1048 KB |
Output is correct |
| 5 |
Correct |
3 ms |
1056 KB |
Output is correct |
| 6 |
Correct |
0 ms |
300 KB |
Output is correct |
| 7 |
Correct |
4 ms |
1076 KB |
Output is correct |
| 8 |
Correct |
5 ms |
1048 KB |
Output is correct |
| 9 |
Correct |
3 ms |
976 KB |
Output is correct |
| 10 |
Correct |
7 ms |
1072 KB |
Output is correct |
| 11 |
Correct |
8 ms |
1068 KB |
Output is correct |
| 12 |
Correct |
4 ms |
1112 KB |
Output is correct |
| 13 |
Correct |
11 ms |
1108 KB |
Output is correct |
| 14 |
Correct |
10 ms |
336 KB |
Output is correct |
| 15 |
Correct |
15 ms |
1092 KB |
Output is correct |
| 16 |
Partially correct |
73 ms |
1096 KB |
Partially correct - number of queries: 7392 |
| 17 |
Correct |
2 ms |
208 KB |
Output is correct |
| 18 |
Partially correct |
95 ms |
1228 KB |
Partially correct - number of queries: 8827 |
| 19 |
Correct |
5 ms |
300 KB |
Output is correct |
| 20 |
Correct |
24 ms |
704 KB |
Output is correct |
| 21 |
Correct |
48 ms |
1068 KB |
Output is correct |
| 22 |
Correct |
8 ms |
976 KB |
Output is correct |
| 23 |
Correct |
4 ms |
968 KB |
Output is correct |
| 24 |
Correct |
5 ms |
968 KB |
Output is correct |
| 25 |
Partially correct |
47 ms |
1076 KB |
Partially correct - number of queries: 5001 |
| 26 |
Correct |
61 ms |
1144 KB |
Output is correct |
| 27 |
Correct |
5 ms |
976 KB |
Output is correct |
| 28 |
Partially correct |
76 ms |
1440 KB |
Partially correct - number of queries: 8368 |
| 29 |
Partially correct |
46 ms |
1216 KB |
Partially correct - number of queries: 6344 |
| 30 |
Partially correct |
37 ms |
1264 KB |
Partially correct - number of queries: 8751 |
| 31 |
Correct |
5 ms |
208 KB |
Output is correct |
| 32 |
Correct |
7 ms |
1068 KB |
Output is correct |
| 33 |
Correct |
0 ms |
208 KB |
Output is correct |
| 34 |
Correct |
28 ms |
1072 KB |
Output is correct |
| 35 |
Correct |
5 ms |
1060 KB |
Output is correct |
| 36 |
Correct |
20 ms |
1088 KB |
Output is correct |
| 37 |
Correct |
6 ms |
1068 KB |
Output is correct |
| 38 |
Correct |
5 ms |
1068 KB |
Output is correct |
| 39 |
Correct |
21 ms |
1244 KB |
Output is correct |
| 40 |
Partially correct |
30 ms |
1376 KB |
Partially correct - number of queries: 7564 |
| 41 |
Partially correct |
55 ms |
1140 KB |
Partially correct - number of queries: 5225 |
| 42 |
Partially correct |
52 ms |
1056 KB |
Partially correct - number of queries: 5225 |
| 43 |
Correct |
39 ms |
1164 KB |
Output is correct |
| 44 |
Correct |
39 ms |
1068 KB |
Output is correct |
| 45 |
Correct |
13 ms |
1132 KB |
Output is correct |
| 46 |
Correct |
4 ms |
296 KB |
Output is correct |
| 47 |
Correct |
41 ms |
1056 KB |
Output is correct |
| 48 |
Partially correct |
44 ms |
1084 KB |
Partially correct - number of queries: 6415 |
| 49 |
Correct |
6 ms |
1084 KB |
Output is correct |
| 50 |
Partially correct |
87 ms |
1204 KB |
Partially correct - number of queries: 8832 |
| 51 |
Correct |
31 ms |
1224 KB |
Output is correct |
| 52 |
Correct |
4 ms |
1076 KB |
Output is correct |
| 53 |
Correct |
4 ms |
1072 KB |
Output is correct |
| 54 |
Correct |
22 ms |
1156 KB |
Output is correct |
| 55 |
Correct |
7 ms |
300 KB |
Output is correct |
| 56 |
Partially correct |
75 ms |
1336 KB |
Partially correct - number of queries: 8815 |
| 57 |
Partially correct |
63 ms |
1184 KB |
Partially correct - number of queries: 6336 |
| 58 |
Partially correct |
58 ms |
1192 KB |
Partially correct - number of queries: 6418 |
| 59 |
Partially correct |
42 ms |
1096 KB |
Partially correct - number of queries: 5242 |
| 60 |
Correct |
40 ms |
1096 KB |
Output is correct |
| 61 |
Correct |
6 ms |
1096 KB |
Output is correct |
| 62 |
Correct |
3 ms |
1076 KB |
Output is correct |
| 63 |
Correct |
6 ms |
1072 KB |
Output is correct |
| 64 |
Correct |
5 ms |
976 KB |
Output is correct |
| 65 |
Correct |
7 ms |
1056 KB |
Output is correct |
| 66 |
Partially correct |
69 ms |
968 KB |
Partially correct - number of queries: 8753 |
| 67 |
Correct |
6 ms |
1060 KB |
Output is correct |
| 68 |
Correct |
4 ms |
208 KB |
Output is correct |
| 69 |
Partially correct |
100 ms |
1064 KB |
Partially correct - number of queries: 8453 |
| 70 |
Correct |
7 ms |
1060 KB |
Output is correct |
| 71 |
Partially correct |
107 ms |
1204 KB |
Partially correct - number of queries: 8970 |
| 72 |
Correct |
9 ms |
1104 KB |
Output is correct |
| 73 |
Partially correct |
86 ms |
1244 KB |
Partially correct - number of queries: 8844 |
| 74 |
Partially correct |
79 ms |
1212 KB |
Partially correct - number of queries: 8898 |
| 75 |
Correct |
8 ms |
1080 KB |
Output is correct |
| 76 |
Partially correct |
67 ms |
1148 KB |
Partially correct - number of queries: 7674 |
| 77 |
Partially correct |
70 ms |
1220 KB |
Partially correct - number of queries: 8970 |
| 78 |
Correct |
11 ms |
1204 KB |
Output is correct |
| 79 |
Correct |
40 ms |
1200 KB |
Output is correct |
| 80 |
Partially correct |
50 ms |
1324 KB |
Partially correct - number of queries: 8970 |
| 81 |
Partially correct |
80 ms |
1208 KB |
Partially correct - number of queries: 8970 |
| 82 |
Partially correct |
85 ms |
1256 KB |
Partially correct - number of queries: 8896 |
| 83 |
Correct |
4 ms |
1104 KB |
Output is correct |
| 84 |
Partially correct |
85 ms |
1212 KB |
Partially correct - number of queries: 7386 |
| 85 |
Partially correct |
83 ms |
1352 KB |
Partially correct - number of queries: 8969 |
| 86 |
Correct |
5 ms |
976 KB |
Output is correct |
| 87 |
Correct |
5 ms |
1080 KB |
Output is correct |
| 88 |
Correct |
3 ms |
976 KB |
Output is correct |
| 89 |
Correct |
6 ms |
976 KB |
Output is correct |
| 90 |
Correct |
5 ms |
976 KB |
Output is correct |
| 91 |
Correct |
3 ms |
1072 KB |
Output is correct |
| 92 |
Correct |
4 ms |
976 KB |
Output is correct |
| 93 |
Correct |
9 ms |
1104 KB |
Output is correct |
| 94 |
Correct |
8 ms |
1180 KB |
Output is correct |
| 95 |
Correct |
9 ms |
1104 KB |
Output is correct |
| 96 |
Correct |
7 ms |
1108 KB |
Output is correct |
| 97 |
Correct |
5 ms |
1104 KB |
Output is correct |
