Submission #707672

#	Time	Username	Problem	Language	Result	Execution time	Memory
707672		benjaminkleyn	Paint By Numbers (IOI16_paint)	C++17	32 / 100	1 ms	340 KiB

paint

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

string solve_puzzle(string s, vector<int> c) 
{
    int n = s.size(), k = c.size();
    string res(n, '?');

    int sum_l = 0, sum_r = 0;
    for (int i = 0; i < k; i++)
        sum_r += c[i];

    for (int i = 0; i < k; i++)
    {
        sum_r -= c[i];

        int L_dist = sum_l + i;
        int R_dist = sum_r + k - 1 - i;


        int leftmost_l = L_dist;
        int leftmost_r = L_dist + c[i] - 1;

        int rightmost_l = n - R_dist - c[i];
        int rightmost_r = n - R_dist - 1;

        if (L_dist + R_dist >= n)
            continue;

        for (int j = rightmost_l; j <= leftmost_r; j++)
            res[j] = 'X';

        sum_l += c[i];
    }

    if (sum_l + k - 1 == n)
    {
        for (int i = 0; i < n; i++)
            if (res[i] == '?')
                res[i] = '_';
    }

    return res;
}

Compilation message (stderr)

paint.cpp: In function 'std::string solve_puzzle(std::string, std::vector<int>)':
paint.cpp:22:13: warning: unused variable 'leftmost_l' [-Wunused-variable]
   22 |         int leftmost_l = L_dist;
      |             ^~~~~~~~~~
paint.cpp:26:13: warning: unused variable 'rightmost_r' [-Wunused-variable]
   26 |         int rightmost_r = n - R_dist - 1;
      |             ^~~~~~~~~~~

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