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Submission #1089704

# Submission time Handle Problem Language Result Execution time Memory
1089704 2024-09-16T22:38:43 Z urd05 The Big Prize (IOI17_prize) C++17
100 / 100
 30 ms 2256 KB 
#include "prize.h"
#include <bits/stdc++.h>
using namespace std;

typedef pair<int,int> P;
int n;
P save[200005];

P query(int i) {
    if (save[i].first!=-1) {
        return save[i];
    }
    vector<int> got=ask(i);
    return save[i]=P(got[0],got[1]);
}

vector<int> vec;
int mxv;

void solve(int l,int r,int k,int y) {
    if (l>r||k==0) {
        return;
    }
    int mid=(l+r)/2;
    P got=query(mid);
    if (got.first+got.second==mxv) {
        solve(l,mid-1,y-got.second,y);
        solve(mid+1,r,k-(y-got.second),got.second);
        return;
    }
    vec.push_back(mid);
                if (got.first+got.second==0) {
                return;
            }
    int cnt=1;
    for(int i=mid-1;i>=l;i--) {
        P got=query(i);
        if (got.first+got.second==mxv) {
            solve(l,i-1,y-got.second,y);
            solve(mid+1,r,k-(y-got.second)-cnt,got.second-cnt);
            return;
        }
        else {
            vec.push_back(i);
                        if (got.first+got.second==0) {
                return;
            }
            cnt++;
        }
    }
    solve(mid+1,r,k-cnt,y-cnt);
}

int find_best(int N) {
    n=N;
	for(int i = 0; i < n; i++) {
	    save[i]=P(-1,-1);
	}
	int ind=450;
	int cnt=0;
	set<int> s;
	for(int i=0;i<480;i++) {
	    P got=query(i);
	    s.insert(got.first+got.second);
	    int y=(*s.rbegin());
	    if (s.size()==5||y>40) {
	        int mx=*s.rbegin();
	        mxv=mx;
	        for(int j=0;j<=i;j++) {
	            if (save[j].first+save[j].second!=mx) {
	                vec.push_back(j);
	                cnt--;
	            }
	            else {
	                cnt=save[j].second;
	            }
	        }
	        ind=i+1;
	        break;
	    }
	    if (i==479||i==n-1) {
	        ind=i+1;
	        int mx=*s.rbegin();
	        mxv=mx;
	        for(int j=0;j<=i;j++) {
	            if (save[j].first+save[j].second!=mx) {
	                vec.push_back(j);
	                cnt--;
	            }
	            else {
	                cnt=save[j].second;
	            }
	        }
	        break;
	    }
	}
	for(int x:vec) {
	    if (query(x)==P(0,0)) {
	        return x;
	    }
	}
	solve(ind,n-1,cnt,cnt);
	for(int x:vec) {
	    if (query(x)==P(0,0)) {
	        return x;
	    }
	}
	return 0;
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1880 KB Output is correct
2 Correct 4 ms 1880 KB Output is correct
3 Correct 3 ms 1880 KB Output is correct
4 Correct 2 ms 1880 KB Output is correct
5 Correct 3 ms 1880 KB Output is correct
6 Correct 3 ms 1880 KB Output is correct
7 Correct 3 ms 1880 KB Output is correct
8 Correct 3 ms 1880 KB Output is correct
9 Correct 3 ms 1880 KB Output is correct
10 Correct 3 ms 1880 KB Output is correct

Subtask #2
80.0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1876 KB Output is correct
2 Correct 4 ms 1880 KB Output is correct
3 Correct 3 ms 1880 KB Output is correct
4 Correct 3 ms 1880 KB Output is correct
5 Correct 3 ms 1880 KB Output is correct
6 Correct 4 ms 1880 KB Output is correct
7 Correct 3 ms 1880 KB Output is correct
8 Correct 3 ms 1880 KB Output is correct
9 Correct 3 ms 1880 KB Output is correct
10 Correct 3 ms 1880 KB Output is correct
11 Correct 5 ms 1880 KB Output is correct
12 Correct 4 ms 1880 KB Output is correct
13 Correct 5 ms 1880 KB Output is correct
14 Correct 5 ms 600 KB Output is correct
15 Correct 14 ms 1880 KB Output is correct
16 Correct 18 ms 2136 KB Output is correct
17 Correct 20 ms 1880 KB Output is correct
18 Correct 27 ms 2136 KB Output is correct
19 Correct 21 ms 2136 KB Output is correct
20 Correct 13 ms 1112 KB Output is correct
21 Correct 25 ms 2136 KB Output is correct
22 Correct 17 ms 2136 KB Output is correct
23 Correct 2 ms 1880 KB Output is correct
24 Correct 4 ms 1880 KB Output is correct
25 Correct 15 ms 1964 KB Output is correct
26 Correct 19 ms 1880 KB Output is correct
27 Correct 4 ms 1876 KB Output is correct
28 Correct 25 ms 1880 KB Output is correct
29 Correct 21 ms 2000 KB Output is correct
30 Correct 17 ms 1880 KB Output is correct
31 Correct 14 ms 2136 KB Output is correct
32 Correct 7 ms 1880 KB Output is correct
33 Correct 1 ms 344 KB Output is correct
34 Correct 22 ms 2224 KB Output is correct
35 Correct 4 ms 1880 KB Output is correct
36 Correct 25 ms 2000 KB Output is correct
37 Correct 6 ms 1880 KB Output is correct
38 Correct 3 ms 1880 KB Output is correct
39 Correct 19 ms 2132 KB Output is correct
40 Correct 11 ms 1880 KB Output is correct
41 Correct 18 ms 1880 KB Output is correct
42 Correct 27 ms 2136 KB Output is correct
43 Correct 23 ms 1880 KB Output is correct
44 Correct 14 ms 1880 KB Output is correct
45 Correct 22 ms 1880 KB Output is correct
46 Correct 21 ms 2000 KB Output is correct
47 Correct 18 ms 1880 KB Output is correct
48 Correct 26 ms 2132 KB Output is correct
49 Correct 16 ms 1880 KB Output is correct
50 Correct 23 ms 1880 KB Output is correct
51 Correct 24 ms 1880 KB Output is correct
52 Correct 21 ms 2136 KB Output is correct
53 Correct 4 ms 1880 KB Output is correct
54 Correct 19 ms 1880 KB Output is correct
55 Correct 20 ms 2004 KB Output is correct
56 Correct 29 ms 2136 KB Output is correct
57 Correct 29 ms 1880 KB Output is correct
58 Correct 25 ms 1876 KB Output is correct
59 Correct 18 ms 1880 KB Output is correct
60 Correct 22 ms 2008 KB Output is correct
61 Correct 3 ms 1880 KB Output is correct
62 Correct 4 ms 1880 KB Output is correct
63 Correct 4 ms 1880 KB Output is correct
64 Correct 4 ms 1880 KB Output is correct
65 Correct 4 ms 1880 KB Output is correct
66 Correct 3 ms 1880 KB Output is correct
67 Correct 2 ms 1880 KB Output is correct
68 Correct 3 ms 1880 KB Output is correct
69 Correct 2 ms 1880 KB Output is correct
70 Correct 1 ms 1880 KB Output is correct
71 Correct 29 ms 2256 KB Output is correct
72 Correct 4 ms 1880 KB Output is correct
73 Correct 25 ms 1996 KB Output is correct
74 Correct 21 ms 2136 KB Output is correct
75 Correct 3 ms 1880 KB Output is correct
76 Correct 30 ms 2000 KB Output is correct
77 Correct 28 ms 1880 KB Output is correct
78 Correct 5 ms 1880 KB Output is correct
79 Correct 9 ms 1880 KB Output is correct
80 Correct 29 ms 1880 KB Output is correct
81 Correct 28 ms 2136 KB Output is correct
82 Correct 26 ms 1880 KB Output is correct
83 Correct 4 ms 1880 KB Output is correct
84 Correct 18 ms 1880 KB Output is correct
85 Correct 26 ms 1880 KB Output is correct
86 Correct 3 ms 1880 KB Output is correct
87 Correct 3 ms 1880 KB Output is correct
88 Correct 3 ms 1880 KB Output is correct
89 Correct 4 ms 1880 KB Output is correct
90 Correct 3 ms 1880 KB Output is correct
91 Correct 2 ms 1876 KB Output is correct
92 Correct 3 ms 1880 KB Output is correct
93 Correct 3 ms 1880 KB Output is correct
94 Correct 6 ms 1880 KB Output is correct
95 Correct 3 ms 1876 KB Output is correct
96 Correct 4 ms 1880 KB Output is correct
97 Correct 3 ms 1880 KB Output is correct