Submission #773420

#	Time	Username	Problem	Language	Result	Execution time	Memory
773420		Jomnoi	Paint By Numbers (IOI16_paint)	C++17	32 / 100	1 ms	212 KiB

paint

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

const int MAX_N = 2e5 + 5;

int qs[MAX_N];
string ans;

string solve_puzzle(string s, vector <int> c) {
    int N = s.size(), k = c.size();
    for (int i = 0; i < k; i++) {
        for (int j = 0; j < c[i]; j++) ans.push_back('X');
        if (i < k - 1) ans.push_back('_');
    }
    while (ans.size() < N) ans.push_back('_');

    for (int i = 1; i <= k; i++) qs[i] = qs[i - 1] + c[i - 1];
    for (int i = 1; i <= k; i++) {
        int l = qs[i - 1] + i;
        int r = N - (qs[k] - qs[i]) - (k - i);

        for (int j = l; j < r - c[i - 1] + 1; j++) ans[j - 1] = '?';
        for (int j = l + c[i - 1]; j <= r; j++) ans[j - 1] = '?';
        // for (int j = r - c[i - 1] + 1; j <= l + c[i - 1] - 1; j++) ans[j - 1] = 'X';
    }
    return ans;
}

Compilation message (stderr)

paint.cpp: In function 'std::string solve_puzzle(std::string, std::vector<int>)':
paint.cpp:16:23: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   16 |     while (ans.size() < N) ans.push_back('_');
      |            ~~~~~~~~~~~^~~

• 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