oj.uz

Submission #1042920

# Submission time Handle Problem Language Result Execution time Memory
1042920 2024-08-03T14:44:33 Z nightfal Comparing Plants (IOI20_plants) C++17
43 / 100
 327 ms 18256 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 std:: vector<std::vector<int>> g, path;
static int l,m,q2;
void print(std::vector<int> &v) {for(int elem: v) std::cout << elem << " "; std::cout << std::endl;}
void print(std::vector<std::vector<int>> &v) {for (auto elem: v) print(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;}

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) {

    if (rank[minI1]!=m) return ranking;
    int minI2 = findPreMinI(k,minI1);

    while (minI2 != minI1) {
        ranking = computeRank(minI2,k,ranking); 
        minI2 = findPreMinI(k,minI1);
    }
    rank[minI1] = ranking--;
    for(int i=minI1-k+1+m; i<=minI1+k-1+m; i++)
        if (rank[i%m]==m) g[minI1][i%m]=1;
        
    update(1,0,m-1,minI1,minI1,m-1);
    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);

    return ranking;
}
void transClosure() {
    for(int k=0; k<m; k++)
        for (int i=0; i<m; i++)
            for(int j=0; j<m; j++)
                g[i][j] = g[i][j] or g[i][k] and g[k][j];
    return;
}
void init5(int k, std::vector<int> &r) {
    int n = r.size(); 
    t.resize(4*n); lz.resize(4*n); g.resize(n,std::vector<int>(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);
    }
    transClosure();
    return;    
}

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;   
    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 if (n<=300 and q2 <= n*(n-1)/2) init5(k,r);
    else init4(k,r);
	return;
}
int compare_plants5(int x, int y) {
    if (g[x][y]) return 1;
    else if (g[y][x]) return -1;
    else return 0;
}
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 if (m<=300 and q2 <= m*(m-1)/2) return compare_plants5(x,y);
    else return compare_plants2(x,y);
	return 0;
}

Compilation message

plants.cpp: In function 'void transClosure()':
plants.cpp:90:46: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   90 |                 g[i][j] = g[i][j] or g[i][k] and g[k][j];
plants.cpp: In function 'void init1(int, std::vector<int>&)':
plants.cpp:165:37: warning: 'decVal' may be used uninitialized in this function [-Wmaybe-uninitialized]
  165 |         inc[s%n] = incVal; dec[s%n] = decVal;
plants.cpp:165:18: warning: 'incVal' may be used uninitialized in this function [-Wmaybe-uninitialized]
  165 |         inc[s%n] = incVal; dec[s%n] = decVal;

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 512 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 432 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 26 ms 4184 KB Output is correct
7 Correct 34 ms 5544 KB Output is correct
8 Correct 41 ms 8640 KB Output is correct
9 Correct 47 ms 8784 KB Output is correct
10 Correct 70 ms 8788 KB Output is correct
11 Correct 45 ms 8796 KB Output is correct
12 Correct 41 ms 8684 KB Output is correct
13 Correct 42 ms 8820 KB Output is correct
14 Correct 43 ms 8784 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 117 ms 5200 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 4 ms 540 KB Output is correct
10 Correct 113 ms 5228 KB Output is correct
11 Correct 102 ms 4992 KB Output is correct
12 Correct 88 ms 5204 KB Output is correct
13 Correct 135 ms 5200 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 117 ms 5200 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 4 ms 540 KB Output is correct
10 Correct 113 ms 5228 KB Output is correct
11 Correct 102 ms 4992 KB Output is correct
12 Correct 88 ms 5204 KB Output is correct
13 Correct 135 ms 5200 KB Output is correct
14 Correct 51 ms 6496 KB Output is correct
15 Correct 327 ms 18224 KB Output is correct
16 Correct 56 ms 6472 KB Output is correct
17 Correct 315 ms 18244 KB Output is correct
18 Correct 201 ms 17644 KB Output is correct
19 Correct 230 ms 18256 KB Output is correct
20 Correct 250 ms 18256 KB Output is correct

Subtask #4
0 / 17.0

# 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 Runtime error 22 ms 7260 KB Execution killed with signal 11
4 Halted 0 ms 0 KB -

Subtask #5
11.0 / 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 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 432 KB Output is correct
6 Correct 2 ms 568 KB Output is correct
7 Correct 33 ms 1880 KB Output is correct
8 Correct 45 ms 1628 KB Output is correct
9 Correct 37 ms 1628 KB Output is correct
10 Correct 38 ms 1652 KB Output is correct
11 Correct 32 ms 1628 KB Output is correct
12 Correct 33 ms 1624 KB Output is correct
13 Correct 7 ms 1372 KB Output is correct

Subtask #6
0 / 15.0

# 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 Runtime error 1 ms 604 KB Execution killed with signal 11
6 Halted 0 ms 0 KB -

Subtask #7
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 512 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 432 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 26 ms 4184 KB Output is correct
7 Correct 34 ms 5544 KB Output is correct
8 Correct 41 ms 8640 KB Output is correct
9 Correct 47 ms 8784 KB Output is correct
10 Correct 70 ms 8788 KB Output is correct
11 Correct 45 ms 8796 KB Output is correct
12 Correct 41 ms 8684 KB Output is correct
13 Correct 42 ms 8820 KB Output is correct
14 Correct 43 ms 8784 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 117 ms 5200 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 4 ms 540 KB Output is correct
24 Correct 113 ms 5228 KB Output is correct
25 Correct 102 ms 4992 KB Output is correct
26 Correct 88 ms 5204 KB Output is correct
27 Correct 135 ms 5200 KB Output is correct
28 Correct 51 ms 6496 KB Output is correct
29 Correct 327 ms 18224 KB Output is correct
30 Correct 56 ms 6472 KB Output is correct
31 Correct 315 ms 18244 KB Output is correct
32 Correct 201 ms 17644 KB Output is correct
33 Correct 230 ms 18256 KB Output is correct
34 Correct 250 ms 18256 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Runtime error 22 ms 7260 KB Execution killed with signal 11
38 Halted 0 ms 0 KB -