oj.uz

Submission #1042385

# Submission time Handle Problem Language Result Execution time Memory
1042385 2024-08-03T03:22:52 Z nightfal Comparing Plants (IOI20_plants) C++17
32 / 100
 330 ms 18512 KB 
#include "plants.h"
#include <iostream>
#include <cstdio>
#include <cassert>
#include <vector>

#include <utility>
#include <tuple>
// using namespace std;
#define maxVal 1'000'000'001
static std:: vector<int> inc,dec,rank,lz;
static std:: vector<std::pair<int,int>> t;
static int l,m;
// void print(std::vector<int> &v) {for(int elem: v) std::cout << elem << " "; std::cout << std::endl;}
void print(std::vector<int> &v) {for(int elem: v) std::cout << elem << " "; std::cout << std::endl;};
void print(std::vector<std::pair<int,int>> &v) {
    for(auto [a,b]: v)
        std::cout << "(" << a << "," << b << ") "; 
    std::cout << std::endl;
    return;
}
std::pair<int,int> update(int node,int start,int end,int left,int right,int diff) {
    if (left <= start and end <= right) lz[node] += diff; 
    if (start!=end) {lz[2*node] += lz[node]; lz[2*node+1] += lz[node];}
    t[node].second += lz[node]; lz[node]=0;
    if (right < start or end < left) return {m+1,maxVal};
    if (left <= start and end <= right) return t[node];

    int mid=(start+end)/2;
    int minI1,minI2,min1,min2;
    std::pair<int,int> ans;

    std::tie(minI1,min1) = update(2*node,start,mid,left,right,diff);
    std::tie(minI2,min2) = update(2*node+1,mid+1,end,left,right,diff);
    if (min1<min2 or min1==min2 and minI1 < minI2) ans = {minI1,min1};
    else ans = {minI2,min2};

    std::tie(minI1,min1) = t[2*node]; 
    std::tie(minI2,min2) = t[2*node+1];
    if (min1<min2 or min1==min2 and minI1 < minI2) t[node] = t[2*node];
    else t[node] = t[2*node+1];

    return ans;    
}
std::pair<int,int> findMin(int node, int start, int end, int left, int right) {
    if (start!=end) {lz[2*node] += lz[node]; lz[2*node+1] += lz[node];}
    t[node].second += lz[node]; lz[node]=0;
    if (right < start or end < left) return {m+1,maxVal};
    if (left <= start and end <= right) return t[node];
    
    int mid=(start+end)/2;
    int minI1,minI2,min1,min2;
    std::pair<int,int> ans;
    
    std::tie(minI1,min1) = findMin(2*node,start,mid,left,right);
    std::tie(minI2,min2) = findMin(2*node+1,mid+1,end,left,right);
    if (min1<min2 or min1==min2 and minI1 < minI2) ans = {minI1,min1};
    else ans = {minI2,min2};
    
    std::tie(minI1,min1) = t[2*node]; 
    std::tie(minI2,min2) = t[2*node+1];
    if (min1<min2 or min1==min2 and minI1 < minI2) t[node] = t[2*node];
    else t[node] = t[2*node+1];
    return ans;
}
void segInit(int node, int start, int end, std::vector<int> &r) {
    if (start==end) {t[node]={start,r[start]}; return;}
    int mid=(start+end)/2;
    segInit(2*node,start,mid,r);
    segInit(2*node+1,mid+1,end,r);
    auto [minI1,min1] = t[2*node];
    auto [minI2,min2] = t[2*node+1];
    t[node] = min1<min2 or min1==min2 and minI1<minI2? t[2*node]:t[2*node+1];
    return;
}
void init3(int k, std::vector<int> &r) {
    int n = r.size(); 
    t.resize(4*n); lz.resize(4*n);
    segInit(1,0,n-1,r);
    rank.resize(n);
    for(int i=n-1; i>=0; i--) {
        auto [minI1,min1] = findMin(1,0,n-1,0,n-1);
        int minI2=minI1,min2=1;
        int minI3=minI1,min3=1;
        if (minI1>0) std::tie(minI2,min2) = findMin(1,0,n-1,std::max(0,minI1-(n-k)),minI1-1);
        if (minI1-(n-k)<0) std::tie(minI3,min3) = findMin(1,0,n-1,minI1-(n-k)+n,n-1);
        if (min3==0) minI1=minI3;
        else if (min2==0) minI1=minI2;
        rank[minI1] = i;
        update(1,0,n-1,minI1,minI1,n-1);
        update(1,0,n-1,std::max(0,minI1-k+1),minI1-1,-1);
        if (minI1-k+1<0) update(1,0,n-1,minI1-k+1+n,n-1,-1);
    }
    return;
}
int compare_plants3(int x, int y) {
    if (rank[x]>rank[y]) return 1;
    else return -1;
}
int findMax(int k, std::vector<int> &r) {
    int i=2*m-1;
    while (r[i%m]!=0) {i--;}
    int j = i-1;
    while (j > i-k) {
        if (r[j%m]==0) i = j; 
        j--;
    }
    for(int j=i; j>i-k; j--) r[j%m]--;
    return i%m;
}
void init2(int k, std::vector<int> &r) {
    int n = r.size();
    rank.resize(n);
    for(int i=n-1; i>=0; i--) {
        rank[findMax(k,r)] = i;   
    }
    return;
}
int compare_plants2(int x, int y) {
    if (rank[x]>rank[y]) return 1;
    else return -1;
}
void init1(int k, std::vector<int> &r) {
    int n = r.size();
    inc.resize(n); dec.resize(n);
    for(int i=0; i<n; i++) {inc[i] = dec[i] = i;}
    int s,incVal,decVal;
    for(s=2*n-1; s>=0; s--) {
        if (r[s%n]==0) incVal = s;
        else decVal = s;
        inc[s%n] = incVal; dec[s%n] = decVal;
    }
    return;
}
int compare_plants1(int x, int y) {
    if (y <= dec[x] or x+m <= inc[y]) return 1;
    else if (y <= inc[x] or x+m <= dec[y]) return -1;
	return 0;
}
void init(int k, std::vector<int> r) {
    int n = r.size(); 
    m=n; l=k;
	if(k==2) init1(k, r);
    else if(n<=5000 and 2*k>n) init2(k, r);
    else if(2*k>n) init3(k,r);
	return;
}
int compare_plants(int x, int y) {
  	if(l==2) return compare_plants1(x,y);
    else if(m<=5000 and 2*l>m) return compare_plants2(x,y);
    else if(2*l>m) return compare_plants3(x,y);
	return 0;
}

Compilation message

plants.cpp: In function 'std::pair<int, int> update(int, int, int, int, int, int)':
plants.cpp:35:33: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   35 |     if (min1<min2 or min1==min2 and minI1 < minI2) ans = {minI1,min1};
      |                      ~~~~~~~~~~~^~~~~~~~~~~~~~~~~
plants.cpp:40:33: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   40 |     if (min1<min2 or min1==min2 and minI1 < minI2) t[node] = t[2*node];
      |                      ~~~~~~~~~~~^~~~~~~~~~~~~~~~~
plants.cpp: In function 'std::pair<int, int> findMin(int, int, int, int, int)':
plants.cpp:57:33: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   57 |     if (min1<min2 or min1==min2 and minI1 < minI2) ans = {minI1,min1};
      |                      ~~~~~~~~~~~^~~~~~~~~~~~~~~~~
plants.cpp:62:33: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   62 |     if (min1<min2 or min1==min2 and minI1 < minI2) t[node] = t[2*node];
      |                      ~~~~~~~~~~~^~~~~~~~~~~~~~~~~
plants.cpp: In function 'void segInit(int, int, int, std::vector<int>&)':
plants.cpp:73:39: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   73 |     t[node] = min1<min2 or min1==min2 and minI1<minI2? t[2*node]:t[2*node+1];
      |                            ~~~~~~~~~~~^~~~~~~~~~~~~~~
plants.cpp: In function 'void init1(int, std::vector<int>&)':
plants.cpp:131:37: warning: 'decVal' may be used uninitialized in this function [-Wmaybe-uninitialized]
  131 |         inc[s%n] = incVal; dec[s%n] = decVal;
plants.cpp:131:18: warning: 'incVal' may be used uninitialized in this function [-Wmaybe-uninitialized]
  131 |         inc[s%n] = incVal; dec[s%n] = decVal;

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 25 ms 4024 KB Output is correct
7 Correct 30 ms 5664 KB Output is correct
8 Correct 40 ms 8792 KB Output is correct
9 Correct 44 ms 8784 KB Output is correct
10 Correct 54 ms 8784 KB Output is correct
11 Correct 44 ms 8788 KB Output is correct
12 Correct 43 ms 8784 KB Output is correct
13 Correct 38 ms 8784 KB Output is correct
14 Correct 52 ms 8676 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 4 ms 348 KB Output is correct
7 Correct 116 ms 5104 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 4 ms 348 KB Output is correct
10 Correct 115 ms 5000 KB Output is correct
11 Correct 89 ms 4980 KB Output is correct
12 Correct 87 ms 5240 KB Output is correct
13 Correct 143 ms 5204 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 4 ms 348 KB Output is correct
7 Correct 116 ms 5104 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 4 ms 348 KB Output is correct
10 Correct 115 ms 5000 KB Output is correct
11 Correct 89 ms 4980 KB Output is correct
12 Correct 87 ms 5240 KB Output is correct
13 Correct 143 ms 5204 KB Output is correct
14 Correct 51 ms 6484 KB Output is correct
15 Correct 330 ms 18248 KB Output is correct
16 Correct 51 ms 6636 KB Output is correct
17 Correct 313 ms 18000 KB Output is correct
18 Correct 225 ms 18000 KB Output is correct
19 Correct 239 ms 18256 KB Output is correct
20 Correct 298 ms 18512 KB Output is correct

Subtask #4
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Incorrect 0 ms 348 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 436 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Incorrect 0 ms 348 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Incorrect 0 ms 348 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #7
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 25 ms 4024 KB Output is correct
7 Correct 30 ms 5664 KB Output is correct
8 Correct 40 ms 8792 KB Output is correct
9 Correct 44 ms 8784 KB Output is correct
10 Correct 54 ms 8784 KB Output is correct
11 Correct 44 ms 8788 KB Output is correct
12 Correct 43 ms 8784 KB Output is correct
13 Correct 38 ms 8784 KB Output is correct
14 Correct 52 ms 8676 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 4 ms 348 KB Output is correct
21 Correct 116 ms 5104 KB Output is correct
22 Correct 1 ms 344 KB Output is correct
23 Correct 4 ms 348 KB Output is correct
24 Correct 115 ms 5000 KB Output is correct
25 Correct 89 ms 4980 KB Output is correct
26 Correct 87 ms 5240 KB Output is correct
27 Correct 143 ms 5204 KB Output is correct
28 Correct 51 ms 6484 KB Output is correct
29 Correct 330 ms 18248 KB Output is correct
30 Correct 51 ms 6636 KB Output is correct
31 Correct 313 ms 18000 KB Output is correct
32 Correct 225 ms 18000 KB Output is correct
33 Correct 239 ms 18256 KB Output is correct
34 Correct 298 ms 18512 KB Output is correct
35 Correct 0 ms 344 KB Output is correct
36 Incorrect 0 ms 348 KB Output isn't correct
37 Halted 0 ms 0 KB -