oj.uz

Submission #1042532

# Submission time Handle Problem Language Result Execution time Memory
1042532 2024-08-03T06:28:37 Z nightfal Comparing Plants (IOI20_plants) C++17
49 / 100
 324 ms 18660 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].first += lz[node]; lz[node]=0;
    if (right < start or end < left) return {maxVal,m+1};
    if (left <= start and end <= right) return t[node];

    int mid=(start+end)/2;
    auto min1  = update(2*node,start,mid,left,right,diff);
    auto min2  = update(2*node+1,mid+1,end,left,right,diff);
    auto ans = min1<min2? min1:min2;
    t[node] = t[2*node]<t[2*node+1]? t[2*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].first += lz[node]; lz[node]=0;
    if (right < start or end < left) return {maxVal,m+1};
    if (left <= start and end <= right) return t[node];
    
    int mid=(start+end)/2;
    auto min1 = findMin(2*node,start,mid,left,right);
    auto min2 = findMin(2*node+1,mid+1,end,left,right);
    auto ans = min1<min2? min1:min2;
    t[node] = t[2*node]<t[2*node+1]? t[2*node]:t[2*node+1];    
    return ans;
}
void segInit(int node, int start, int end, std::vector<int> &r) {
    if (start==end) {t[node]={r[start],start}; return;}
    int mid=(start+end)/2;
    segInit(2*node,start,mid,r);
    segInit(2*node+1,mid+1,end,r);
    t[node] = t[2*node]<t[2*node+1]? t[2*node]:t[2*node+1];
    return;
}
int findPreMinI(int k,int minI1) {
    if (minI1>0) {
        auto[min2,minI2] = findMin(1,0,m-1,std::max(0,minI1-k+1),minI1-1);
        if (min2==0) minI1 = minI2;
    }
    if (minI1-k+1<0) {
        auto[min2,minI2] = findMin(1,0,m-1,minI1-k+1+m,m-1);
        if (min2==0) minI1 = minI2;
    }
    return minI1;
}
int computeRank(int minI1, int k, int ranking) {
    // std::cout << "minI1: " << minI1 << "," << "ranking: " << ranking << std::endl;

    if (rank[minI1]!=m) return ranking;
    int minI2 = findPreMinI(k,minI1);
    // std::cout << "minI2: " << minI2 << std::endl;

    while (minI2 != minI1) {ranking = computeRank(minI2,k,ranking); minI2 = findPreMinI(k,minI1);}
    rank[minI1] = ranking--;
    // std::cout << "rank: "; print(rank);
    update(1,0,m-1,minI1,minI1,m-1);
    // std::cout << "t: "; print(t);
    update(1,0,m-1,std::max(0,minI1-k+1),minI1-1,-1);
    if (minI1-k+1<0) update(1,0,m-1,minI1-k+1+m,m-1,-1);
    // std::cout << "t: "; print(t);
    // std::cout << "lz: "; print(lz);

    return ranking;
}
void init4(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,n);
    int ranking = n-1;
    while (ranking >=0) {
        auto [min1,minI1] = findMin(1,0,n-1,0,n-1);
        ranking = computeRank(minI1,k,ranking);
    }
    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 [min1,minI1] = findMin(1,0,n-1,0,n-1);
        int min2=1, minI2=minI1;
        int min3=1, minI3=minI1;
        if (minI1>0) std::tie(min2,minI2) = findMin(1,0,n-1,std::max(0,minI1-(n-k)),minI1-1);
        if (minI1-(n-k)<0) std::tie(min3,minI3) = 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 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;   
    // std::cout << "init2 rank: "; print(rank);
    return;
}
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;
}
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);
    else init4(k,r);
	return;
}
int compare_plants2(int x, int y) {
    if (rank[x]>rank[y]) return 1;
    else return -1;
}
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;
}
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_plants2(x,y);
    else return compare_plants2(x,y);
	return 0;
}

Compilation message

plants.cpp: In function 'void init1(int, std::vector<int>&)':
plants.cpp:147:37: warning: 'decVal' may be used uninitialized in this function [-Wmaybe-uninitialized]
  147 |         inc[s%n] = incVal; dec[s%n] = decVal;
plants.cpp:147:18: warning: 'incVal' may be used uninitialized in this function [-Wmaybe-uninitialized]
  147 |         inc[s%n] = incVal; dec[s%n] = decVal;

Subtask #1
5.0 / 5.0

# 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 27 ms 3920 KB Output is correct
7 Correct 33 ms 4692 KB Output is correct
8 Correct 49 ms 7508 KB Output is correct
9 Correct 40 ms 7508 KB Output is correct
10 Correct 45 ms 7572 KB Output is correct
11 Correct 42 ms 7504 KB Output is correct
12 Correct 46 ms 7580 KB Output is correct
13 Correct 39 ms 7472 KB Output is correct
14 Correct 39 ms 7508 KB Output is correct

Subtask #2
14.0 / 14.0

# 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 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 4 ms 540 KB Output is correct
7 Correct 115 ms 4592 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 5 ms 348 KB Output is correct
10 Correct 116 ms 4372 KB Output is correct
11 Correct 89 ms 4372 KB Output is correct
12 Correct 89 ms 4880 KB Output is correct
13 Correct 131 ms 4368 KB Output is correct

Subtask #3
13.0 / 13.0

# 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 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 4 ms 540 KB Output is correct
7 Correct 115 ms 4592 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 5 ms 348 KB Output is correct
10 Correct 116 ms 4372 KB Output is correct
11 Correct 89 ms 4372 KB Output is correct
12 Correct 89 ms 4880 KB Output is correct
13 Correct 131 ms 4368 KB Output is correct
14 Correct 53 ms 5716 KB Output is correct
15 Correct 304 ms 16464 KB Output is correct
16 Correct 56 ms 5716 KB Output is correct
17 Correct 313 ms 16468 KB Output is correct
18 Correct 209 ms 16212 KB Output is correct
19 Correct 208 ms 16376 KB Output is correct
20 Correct 253 ms 16508 KB Output is correct

Subtask #4
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 29 ms 4948 KB Output is correct
4 Correct 183 ms 18660 KB Output is correct
5 Correct 239 ms 17488 KB Output is correct
6 Correct 276 ms 17744 KB Output is correct
7 Correct 315 ms 17752 KB Output is correct
8 Correct 324 ms 18204 KB Output is correct
9 Correct 204 ms 17488 KB Output is correct
10 Correct 183 ms 17488 KB Output is correct
11 Correct 41 ms 8784 KB Output is correct
12 Correct 163 ms 17492 KB Output is correct
13 Correct 202 ms 17488 KB Output is correct

Subtask #5
0 / 11.0

# 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 1 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Incorrect 0 ms 348 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 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 27 ms 3920 KB Output is correct
7 Correct 33 ms 4692 KB Output is correct
8 Correct 49 ms 7508 KB Output is correct
9 Correct 40 ms 7508 KB Output is correct
10 Correct 45 ms 7572 KB Output is correct
11 Correct 42 ms 7504 KB Output is correct
12 Correct 46 ms 7580 KB Output is correct
13 Correct 39 ms 7472 KB Output is correct
14 Correct 39 ms 7508 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 0 ms 436 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 344 KB Output is correct
20 Correct 4 ms 540 KB Output is correct
21 Correct 115 ms 4592 KB Output is correct
22 Correct 1 ms 344 KB Output is correct
23 Correct 5 ms 348 KB Output is correct
24 Correct 116 ms 4372 KB Output is correct
25 Correct 89 ms 4372 KB Output is correct
26 Correct 89 ms 4880 KB Output is correct
27 Correct 131 ms 4368 KB Output is correct
28 Correct 53 ms 5716 KB Output is correct
29 Correct 304 ms 16464 KB Output is correct
30 Correct 56 ms 5716 KB Output is correct
31 Correct 313 ms 16468 KB Output is correct
32 Correct 209 ms 16212 KB Output is correct
33 Correct 208 ms 16376 KB Output is correct
34 Correct 253 ms 16508 KB Output is correct
35 Correct 0 ms 344 KB Output is correct
36 Correct 1 ms 348 KB Output is correct
37 Correct 29 ms 4948 KB Output is correct
38 Correct 183 ms 18660 KB Output is correct
39 Correct 239 ms 17488 KB Output is correct
40 Correct 276 ms 17744 KB Output is correct
41 Correct 315 ms 17752 KB Output is correct
42 Correct 324 ms 18204 KB Output is correct
43 Correct 204 ms 17488 KB Output is correct
44 Correct 183 ms 17488 KB Output is correct
45 Correct 41 ms 8784 KB Output is correct
46 Correct 163 ms 17492 KB Output is correct
47 Correct 202 ms 17488 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 0 ms 348 KB Output is correct
50 Correct 1 ms 344 KB Output is correct
51 Correct 0 ms 348 KB Output is correct
52 Incorrect 0 ms 348 KB Output isn't correct
53 Halted 0 ms 0 KB -