Submission #619648

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
619648	2022-08-02 14:06:41	Bench0310	Paint By Numbers (IOI16_paint)	C++17	90 / 100	568 ms	524288 KiB

paint

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
#include <bits/stdc++.h>
#include "paint.h"
using namespace std;
typedef long long ll;
string solve_puzzle(string s,vector<int> c)
{
    int n=s.size();
    int k=c.size();
    c.insert(c.begin(),0);
    s="$"+s;
    vector<int> wsum(n+1,0);
    for(int i=1;i<=n;i++) wsum[i]=wsum[i-1]+(s[i]=='_');
    auto ws=[&](int l,int r)->int{return (wsum[r]-wsum[l-1]);};
    vector one(n+1,vector(k+1,vector(2,bool(0))));
    one[0][0][1]=1;
    for(int i=1;i<=n;i++)
    {
        //extend
        for(int j=0;j<=k;j++) one[i][j][1]=((one[i-1][j][0]||one[i-1][j][1])&&(s[i]!='X'));
        //new block
        for(int j=1;j<=k;j++) if(i-c[j]>=0) one[i][j][0]=(one[i-c[j]][j-1][1]&&ws(i-c[j]+1,i)==0);
    }
    vector two(n+2,vector(k+2,vector(2,bool(0))));
    two[n+1][k+1][1]=1;
    for(int i=n;i>=1;i--)
    {
        //extend
        for(int j=1;j<=k+1;j++) two[i][j][1]=((two[i+1][j][0]||two[i+1][j][1])&&(s[i]!='X'));
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

• Subtask 1: 7 / 7
• Subtask 2: 3 / 3
• Subtask 3: 22 / 22
• Subtask 4: 27 / 27
• Subtask 5: 21 / 21
• Subtask 6: 10 / 10
• Subtask 7: 0 / 10