Submission #1035917

#	Time	Username	Problem	Language	Result	Execution time	Memory
1035917		baldwinhuang1	Paint By Numbers (IOI16_paint)	C++14	32 / 100	1 ms	444 KiB

paint

#include "paint.h"

#include <cstdlib>

#include <bits/stdc++.h>

using namespace std;

string solve_puzzle(string s, vector<int> c) {
    vector<int> start(c.size(), 0);
    for (int i = 1; i < c.size(); i++) {
        start[i] = start[i - 1] + 1 + c[i - 1];
    }

    vector<int> end(c.size(), s.size() - 1);
    for (int i = c.size() - 2; i >= 0; i--) {
        end[i] = end[i + 1] - 1 - c[i + 1];
    }

    string ans = s;

    for (int i = 0; i < c.size(); i++) {
        string a = s;
        string b = s;

        for (int j = start[i]; j <= (start[i] + c[i] - 1); j++) {
            a[j] = 'X';
        }

        for (int j = end[i]; j >= (end[i] - c[i] + 1); j--) {
            b[j] = 'X';
        }

        for (int j = start[i]; j <= end[i]; j++) {
            ans[j] = '?';
        }

        for (int j = start[i]; j <= end[i]; j++) {
            if (a[j] == 'X' && b[j] == 'X') {
                ans[j] = 'X';
            }
        }

        // cout << start[i] << ' ' << end[i] << '\n';

        // cout << a << '\n' << b << '\n';
    }

    for (auto &i: ans) {
        if (i == '.') {
            i = '_';
        }
    }
    
    return ans;
}

Compilation message (stderr)

paint.cpp: In function 'std::string solve_puzzle(std::string, std::vector<int>)':
paint.cpp:11:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   11 |     for (int i = 1; i < c.size(); i++) {
      |                     ~~^~~~~~~~~~
paint.cpp:22:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |     for (int i = 0; i < c.size(); i++) {
      |                     ~~^~~~~~~~~~

• 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