Submission #1204508

#	Time	Username	Problem	Language	Result	Execution time	Memory
1204508		PlayVoltz	Paint By Numbers (IOI16_paint)	C++20	0 / 100	0 ms	320 KiB

paint

#include "paint.h"
#include <bits/stdc++.h>
using namespace std;

string solve_puzzle(string s, vector<int> vect){
	int n=s.size(), k=vect.size();
	string ans(n, '.');
	s = '.'+s;
	vect.insert(vect.begin(), 0);
	vector<int> psum(n+1, 0);
	for (int i=1; i<=n; ++i)psum[i]=psum[i-1]+(s[i]=='_');
	vector<vector<int> > dp(n+1, vector<int>(k+1, 0));
	for (int i=0; i<=n; ++i)if (s[i]!='X')dp[i][0]=1;
	for (int i=1; i<=n; ++i)for (int j=1; j<=k; ++j){
		if (s[i]!='X'&&dp[i-1][j])dp[i][j]|=1;
		if (j==1&&vect[j]<=i&&psum[i]==psum[i-vect[j]]&&dp[i-vect[j]][j-1])dp[i][j]|=2;
		if (j!=1&&vect[j]<i&&psum[i]==psum[i-vect[j]]&&s[i-vect[j]]!='X'&&dp[i-vect[j]-1][j-1])dp[i][j]|=2;
	}
	int i=n, j=k;
	while (i){
		if (dp[i][j]&2){
			for (int p=i; p>i-vect[j]; --p)ans[p-1]='X';
			ans[i-vect[j]-1]='_';
			i=i-vect[j]-1, --j;
		}
		else ans[i-1]='_', --i;
	}
	return ans;
}

Compilation message (stderr)

paint.h:1:9: warning: #pragma once in main file
    1 | #pragma once
      |         ^~~~
paint_c.h:1:9: warning: #pragma once in main file
    1 | #pragma once
      |         ^~~~

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