oj.uz

Submission #1089985

# Submission time Handle Problem Language Result Execution time Memory
1089985 2024-09-17T13:41:42 Z alexander707070 Land of the Rainbow Gold (APIO17_rainbow) C++14
24 / 100
 1398 ms 259820 KB 
#include<bits/stdc++.h>
#include "rainbow.h"

#define MAXN 300007
using namespace std;

int n,m,sx,sy,a,b,c,d,x,y,comps;
string w;

map< pair<int,int> , int > mp;

int table[1007][1007];

void dfs2(int x,int y){
    table[x][y]=comps;

    if(x>1 and table[x-1][y]==0)dfs2(x-1,y);
    if(x<n and table[x+1][y]==0)dfs2(x+1,y);
    if(y>1 and table[x][y-1]==0)dfs2(x,y-1);
    if(y<m and table[x][y+1]==0)dfs2(x,y+1);
}

void precalc(){
    x=sx; y=sy; table[x][y]=-1;
    for(int i=0;i<w.size();i++){
        if(w[i]=='N')x--;
        if(w[i]=='E')y++;
        if(w[i]=='S')x++;
        if(w[i]=='W')y--;
        table[x][y]=-1;
    }

    for(int f=1;f<=m;f++){
        for(int i=1;i<=n;i++){
            if(table[i][f]==0){
                comps++; dfs2(i,f);
            }
        }
    }
}

int pref[MAXN],suff[MAXN];

void init(int R, int C, int sr, int sc, int M, char *S) {
    n=R; m=C;
    sx=sr; sy=sc;

    for(int i=0;i<M;i++){
        w.push_back(S[i]);
    }

    if(n==2){
        precalc();
    }

    for(int i=1;i<=m;i++){
        pref[i]=max(max(table[1][i],table[2][i]),pref[i-1]);
    }
    for(int i=m;i>=1;i--){
        suff[i]=max(max(table[1][i],table[2][i]),suff[i+1]);
    }
}

bool in(int x,int y){
    return x>=a and x<=c and y>=b and y<=d;
}

void check(int x,int y){
    if(in(x-1,y) and mp[{x-1,y}]==0)mp[{x-1,y}]=1;
    if(in(x+1,y) and mp[{x+1,y}]==0)mp[{x+1,y}]=1;
    if(in(x,y-1) and mp[{x,y-1}]==0)mp[{x,y-1}]=1;
    if(in(x,y+1) and mp[{x,y+1}]==0)mp[{x,y+1}]=1;

    if(in(x-1,y-1) and mp[{x-1,y-1}]==0)mp[{x-1,y-1}]=1;
    if(in(x+1,y+1) and mp[{x+1,y+1}]==0)mp[{x+1,y+1}]=1;
    if(in(x+1,y-1) and mp[{x+1,y-1}]==0)mp[{x+1,y-1}]=1;
    if(in(x-1,y+1) and mp[{x-1,y+1}]==0)mp[{x-1,y+1}]=1;
}

void dfs(int x,int y){
    mp[{x,y}]=2;

    if(mp[{x-1,y}]==1)dfs(x-1,y);
    if(mp[{x+1,y}]==1)dfs(x+1,y);
    if(mp[{x,y-1}]==1)dfs(x,y-1);
    if(mp[{x,y+1}]==1)dfs(x,y+1);
}

void calc(int x,int y){
    if(mp[{x-1,y}]==1){dfs(x-1,y);comps++;}
    if(mp[{x+1,y}]==1){dfs(x+1,y);comps++;}
    if(mp[{x,y-1}]==1){dfs(x,y-1);comps++;}
    if(mp[{x,y+1}]==1){dfs(x,y+1);comps++;}
}

int colour(int ar, int ac, int br, int bc){
    a=ar; b=ac;
    c=br; d=bc;

    if(n==2){
        return pref[bc]-suff[ac]+1;
    }

    comps=0; mp.clear();

    for(int i=a;i<=c;i++){
        mp[{i,b}]=mp[{i,d}]=1;
    }

    for(int i=b;i<=d;i++){
        mp[{a,i}]=mp[{c,i}]=1;
    }

    x=sx; y=sy; mp[{x,y}]=-1;
    for(int i=0;i<w.size();i++){
        if(w[i]=='N')x--;
        if(w[i]=='E')y++;
        if(w[i]=='S')x++;
        if(w[i]=='W')y--;
        mp[{x,y}]=-1;
    }

    x=sx; y=sy; check(x,y);
    for(int i=0;i<w.size();i++){
        if(w[i]=='N')x--;
        if(w[i]=='E')y++;
        if(w[i]=='S')x++;
        if(w[i]=='W')y--;
        check(x,y);
    }

    x=sx; y=sy; calc(x,y);
    for(int i=0;i<w.size();i++){
        if(w[i]=='N')x--;
        if(w[i]=='E')y++;
        if(w[i]=='S')x++;
        if(w[i]=='W')y--;
        calc(x,y);
    }

    if(comps==0 and mp[{a,b}]==1)comps++;

    return comps;
}

/*int main(){

    init(6, 4,3, 3, 9,"NWESSWEWS");

    cout<<colour(2,3, 2, 3)<<"\n";
    cout<<colour(3,2, 4, 4)<<"\n";
    cout<<colour(5,3, 6, 4)<<"\n";
    cout<<colour(1,2, 5, 3)<<"\n";
    cout<<colour(4,6,4,6)<<"\n";

    return 0;
}*/

Compilation message

rainbow.cpp: In function 'void precalc()':
rainbow.cpp:25:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |     for(int i=0;i<w.size();i++){
      |                 ~^~~~~~~~~
rainbow.cpp: In function 'int colour(int, int, int, int)':
rainbow.cpp:115:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  115 |     for(int i=0;i<w.size();i++){
      |                 ~^~~~~~~~~
rainbow.cpp:124:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  124 |     for(int i=0;i<w.size();i++){
      |                 ~^~~~~~~~~
rainbow.cpp:133:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  133 |     for(int i=0;i<w.size();i++){
      |                 ~^~~~~~~~~

Subtask #1
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 115 ms 348 KB Output is correct
2 Correct 640 ms 604 KB Output is correct
3 Correct 109 ms 344 KB Output is correct
4 Correct 182 ms 520 KB Output is correct
5 Correct 886 ms 648 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 392 ms 564 KB Output is correct
12 Correct 695 ms 592 KB Output is correct
13 Correct 711 ms 684 KB Output is correct
14 Correct 1398 ms 616 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Incorrect 0 ms 348 KB Output isn't correct
17 Halted 0 ms 0 KB -

Subtask #2
0 / 12.0

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

Subtask #3
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 557 ms 99924 KB Output is correct
3 Correct 488 ms 99988 KB Output is correct
4 Correct 471 ms 81236 KB Output is correct
5 Correct 239 ms 50900 KB Output is correct
6 Correct 158 ms 35152 KB Output is correct
7 Correct 315 ms 48444 KB Output is correct
8 Correct 86 ms 17868 KB Output is correct
9 Correct 68 ms 15568 KB Output is correct
10 Correct 30 ms 3900 KB Output is correct
11 Correct 56 ms 12632 KB Output is correct
12 Correct 118 ms 27728 KB Output is correct
13 Correct 97 ms 27732 KB Output is correct
14 Correct 89 ms 21568 KB Output is correct
15 Correct 82 ms 22948 KB Output is correct
16 Correct 138 ms 28500 KB Output is correct
17 Correct 124 ms 28752 KB Output is correct
18 Correct 176 ms 45520 KB Output is correct
19 Correct 655 ms 154040 KB Output is correct
20 Correct 525 ms 107400 KB Output is correct
21 Correct 169 ms 21072 KB Output is correct
22 Correct 167 ms 18616 KB Output is correct
23 Correct 297 ms 64596 KB Output is correct
24 Correct 437 ms 92208 KB Output is correct
25 Correct 540 ms 94548 KB Output is correct
26 Correct 478 ms 105556 KB Output is correct
27 Correct 1101 ms 259820 KB Output is correct
28 Correct 410 ms 89548 KB Output is correct
29 Correct 302 ms 54356 KB Output is correct
30 Correct 358 ms 57172 KB Output is correct
31 Correct 1050 ms 230652 KB Output is correct
32 Correct 1251 ms 242512 KB Output is correct
33 Correct 1175 ms 242372 KB Output is correct

Subtask #4
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 115 ms 348 KB Output is correct
2 Correct 640 ms 604 KB Output is correct
3 Correct 109 ms 344 KB Output is correct
4 Correct 182 ms 520 KB Output is correct
5 Correct 886 ms 648 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 392 ms 564 KB Output is correct
12 Correct 695 ms 592 KB Output is correct
13 Correct 711 ms 684 KB Output is correct
14 Correct 1398 ms 616 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Incorrect 0 ms 348 KB Output isn't correct
17 Halted 0 ms 0 KB -

Subtask #5
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 115 ms 348 KB Output is correct
2 Correct 640 ms 604 KB Output is correct
3 Correct 109 ms 344 KB Output is correct
4 Correct 182 ms 520 KB Output is correct
5 Correct 886 ms 648 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 392 ms 564 KB Output is correct
12 Correct 695 ms 592 KB Output is correct
13 Correct 711 ms 684 KB Output is correct
14 Correct 1398 ms 616 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Incorrect 0 ms 348 KB Output isn't correct
17 Halted 0 ms 0 KB -