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Submission #432211

# Submission time Handle Problem Language Result Execution time Memory
432211 2021-06-18T03:12:18 Z Belgutei The Big Prize (IOI17_prize) C++17
90 / 100
 105 ms 1156 KB 
#include "prize.h"
#include<bits/stdc++.h>
 
using namespace std;
 
#define ll long long
#define ff first
#define ss second
#define pb push_back
#define mk make_pair
 
vector<int> v; 
map<int,pair<int,int> > mp;
bool check[200005];
int ans,mx,N;
 
 
void dfs(int x, int y){
	if(x>y || y>=N) return;
	int a,b,c,d;
	if(check[x]==1){
		a=mp[x].ff;
		b=mp[x].ss;
	}
	else{
		vector<int> v1=ask(x);
		a=v1[0];
		b=v1[1];
		check[x]=1;
		mp[x].ff=a;
		mp[x].ss=b;
	}
	if(x==y){
		if(a+b!=mx) v.pb(x);
		return;
	}
	if(check[y]==1){
		c=mp[y].ff;
		d=mp[y].ss;
	}
	else{
		vector<int> v2=ask(y);
		c=v2[0];
		d=v2[1];
		mp[y].ff=c;
		mp[y].ss=d;
		check[y]=1;
	}
	if(a+b==mx && c+d==mx){
		if(c-a==0 || y-x==1) return;
		int mid=(x+y)/2;
		dfs(x,mid);
		dfs(mid+1,y);
	}
	else{
		if(a+b<mx && c+d<mx){
			v.pb(x);
			v.pb(y);
			if(y-x>=3){
				int mid=(((y-1)+(x+1))/2);
				dfs(x+1,mid);
				dfs(mid+1,y-1);
			}
			if(y-x==2){
				dfs(x+1,x+1);
			}
			return;
		}
		if(a+b<mx){
			v.pb(x);
			if(x+1<y){
				int mid=(x+1+y)/2;
				dfs(x+1,mid);
				dfs(mid+1,y);
			}
			return;
		}
		v.pb(y);
		if(x<y-1){
			int mid=(x-1+y)/2;
			dfs(x,mid);
			dfs(mid+1,y-1);
		}
	}
}
 
int find_best(int n) {
	N=n;
	for(int i=0; i<min(480,n); i++){
		vector<int> vv;
		vv=ask(i);
		check[i]=1;
		mp[i].ff=vv[0];
		mp[i].ss=vv[1];
		mx=max(mx,vv[0]+vv[1]);
	}
	int l=0;
	int r=n-1;
	dfs(l,r);
	for(int i=0; i<v.size(); i++){
		if(check[v[i]]==1){
			if(mp[v[i]].ff+mp[v[i]].ss==0){
				return v[i];
			}
			continue;
		}
	}
	return -1;
}

Compilation message

prize.cpp: In function 'int find_best(int)':
prize.cpp:100:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  100 |  for(int i=0; i<v.size(); i++){
      |               ~^~~~~~~~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 280 KB Output is correct
2 Correct 10 ms 280 KB Output is correct
3 Correct 6 ms 308 KB Output is correct
4 Correct 6 ms 268 KB Output is correct
5 Correct 3 ms 316 KB Output is correct
6 Correct 6 ms 288 KB Output is correct
7 Correct 7 ms 288 KB Output is correct
8 Correct 6 ms 300 KB Output is correct
9 Correct 5 ms 296 KB Output is correct
10 Correct 8 ms 304 KB Output is correct

Subtask #2
70.0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 304 KB Output is correct
2 Correct 7 ms 320 KB Output is correct
3 Correct 3 ms 292 KB Output is correct
4 Correct 7 ms 320 KB Output is correct
5 Correct 5 ms 328 KB Output is correct
6 Correct 3 ms 312 KB Output is correct
7 Correct 7 ms 200 KB Output is correct
8 Correct 6 ms 200 KB Output is correct
9 Correct 5 ms 284 KB Output is correct
10 Correct 8 ms 328 KB Output is correct
11 Correct 8 ms 504 KB Output is correct
12 Correct 7 ms 500 KB Output is correct
13 Correct 14 ms 540 KB Output is correct
14 Correct 26 ms 448 KB Output is correct
15 Partially correct 68 ms 884 KB Partially correct - number of queries: 7832
16 Partially correct 82 ms 924 KB Partially correct - number of queries: 8270
17 Partially correct 105 ms 884 KB Partially correct - number of queries: 8271
18 Partially correct 89 ms 896 KB Partially correct - number of queries: 8320
19 Partially correct 43 ms 952 KB Partially correct - number of queries: 7868
20 Partially correct 31 ms 820 KB Partially correct - number of queries: 5498
21 Partially correct 73 ms 920 KB Partially correct - number of queries: 8249
22 Partially correct 46 ms 868 KB Partially correct - number of queries: 6513
23 Correct 9 ms 412 KB Output is correct
24 Correct 9 ms 516 KB Output is correct
25 Partially correct 78 ms 912 KB Partially correct - number of queries: 7547
26 Partially correct 68 ms 880 KB Partially correct - number of queries: 7455
27 Correct 9 ms 408 KB Output is correct
28 Partially correct 83 ms 916 KB Partially correct - number of queries: 7497
29 Partially correct 63 ms 800 KB Partially correct - number of queries: 6391
30 Partially correct 68 ms 1000 KB Partially correct - number of queries: 8246
31 Partially correct 73 ms 940 KB Partially correct - number of queries: 8187
32 Correct 17 ms 556 KB Output is correct
33 Correct 1 ms 200 KB Output is correct
34 Partially correct 84 ms 1028 KB Partially correct - number of queries: 8287
35 Correct 9 ms 448 KB Output is correct
36 Partially correct 87 ms 940 KB Partially correct - number of queries: 8308
37 Correct 17 ms 412 KB Output is correct
38 Correct 6 ms 320 KB Output is correct
39 Partially correct 83 ms 884 KB Partially correct - number of queries: 8251
40 Partially correct 61 ms 984 KB Partially correct - number of queries: 7267
41 Partially correct 75 ms 1128 KB Partially correct - number of queries: 8272
42 Partially correct 97 ms 944 KB Partially correct - number of queries: 8272
43 Partially correct 86 ms 928 KB Partially correct - number of queries: 8073
44 Partially correct 89 ms 924 KB Partially correct - number of queries: 8265
45 Partially correct 70 ms 904 KB Partially correct - number of queries: 7484
46 Partially correct 65 ms 988 KB Partially correct - number of queries: 8304
47 Partially correct 43 ms 952 KB Partially correct - number of queries: 7584
48 Partially correct 89 ms 948 KB Partially correct - number of queries: 8269
49 Partially correct 78 ms 984 KB Partially correct - number of queries: 8323
50 Partially correct 82 ms 952 KB Partially correct - number of queries: 8274
51 Partially correct 80 ms 944 KB Partially correct - number of queries: 8253
52 Partially correct 76 ms 972 KB Partially correct - number of queries: 8320
53 Correct 8 ms 408 KB Output is correct
54 Partially correct 97 ms 976 KB Partially correct - number of queries: 8250
55 Partially correct 48 ms 1044 KB Partially correct - number of queries: 8300
56 Partially correct 94 ms 936 KB Partially correct - number of queries: 8328
57 Partially correct 101 ms 1036 KB Partially correct - number of queries: 8265
58 Partially correct 63 ms 1156 KB Partially correct - number of queries: 8257
59 Partially correct 96 ms 924 KB Partially correct - number of queries: 8302
60 Partially correct 81 ms 904 KB Partially correct - number of queries: 8251
61 Correct 9 ms 412 KB Output is correct
62 Correct 10 ms 412 KB Output is correct
63 Correct 6 ms 344 KB Output is correct
64 Correct 6 ms 336 KB Output is correct
65 Correct 8 ms 296 KB Output is correct
66 Correct 9 ms 292 KB Output is correct
67 Correct 11 ms 272 KB Output is correct
68 Correct 6 ms 328 KB Output is correct
69 Correct 12 ms 272 KB Output is correct
70 Correct 9 ms 284 KB Output is correct
71 Partially correct 82 ms 1024 KB Partially correct - number of queries: 8581
72 Correct 17 ms 448 KB Output is correct
73 Partially correct 100 ms 956 KB Partially correct - number of queries: 8476
74 Partially correct 89 ms 1068 KB Partially correct - number of queries: 8521
75 Correct 7 ms 328 KB Output is correct
76 Partially correct 81 ms 828 KB Partially correct - number of queries: 7501
77 Partially correct 57 ms 984 KB Partially correct - number of queries: 8139
78 Correct 17 ms 440 KB Output is correct
79 Correct 44 ms 728 KB Output is correct
80 Partially correct 76 ms 1072 KB Partially correct - number of queries: 8189
81 Partially correct 73 ms 976 KB Partially correct - number of queries: 8177
82 Partially correct 46 ms 1076 KB Partially correct - number of queries: 8131
83 Correct 7 ms 328 KB Output is correct
84 Partially correct 90 ms 984 KB Partially correct - number of queries: 6847
85 Partially correct 64 ms 916 KB Partially correct - number of queries: 8078
86 Correct 7 ms 424 KB Output is correct
87 Correct 6 ms 320 KB Output is correct
88 Correct 6 ms 328 KB Output is correct
89 Correct 6 ms 312 KB Output is correct
90 Correct 10 ms 312 KB Output is correct
91 Correct 8 ms 300 KB Output is correct
92 Correct 6 ms 328 KB Output is correct
93 Correct 12 ms 484 KB Output is correct
94 Correct 12 ms 484 KB Output is correct
95 Correct 15 ms 392 KB Output is correct
96 Correct 13 ms 440 KB Output is correct
97 Correct 5 ms 320 KB Output is correct