Submission #2362283


Source Code Expand

#include <iostream>
#include <string>

char FLIP[2][128];

int main() {
    std::ios::sync_with_stdio(false);
    FLIP[0]['A'] = 'A';
    FLIP[0]['B'] = 'B';
    FLIP[1]['A'] = 'B';
    FLIP[1]['B'] = 'A';

    for (unsigned N, K; std::cin >> N >> K;) {
        std::string S;
        std::cin >> S;
        unsigned steps = 0, flips = 0, i = 0;
        for (; i < N && steps < K; ++steps) {
            if (S[i] == FLIP[flips % 2]['A']) {
                S[i] = FLIP[flips % 2]['B'];
            }
            else {
                ++i;
                ++flips;
            }
        }

        if (N % 2 == 1) {
            flips += K - steps;
        }

        std::string T(N, '\0');
        for (unsigned j = 0, k = 0; j < N; ++j) {
            if (i < N) {
                T[j] = FLIP[flips % 2][S[i++]];
            }
            else {
                T[j] = FLIP[(flips + ++k) % 2]['A'];
            }
        }
        std::cout << T << '\n';
    }
}

Submission Info

Submission Time
Task D - Half Reflector
User vjudge5
Language C++14 (GCC 5.4.1)
Score 0
Code Size 963 Byte
Status WA
Exec Time 8 ms
Memory 920 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 0 / 900
Status
AC × 3
AC × 48
WA × 2
Set Name Test Cases
Sample sample1.txt, sample2.txt, sample3.txt
All sample1.txt, sample2.txt, sample3.txt, in1.txt, in10.txt, in11.txt, in12.txt, in13.txt, in14.txt, in15.txt, in16.txt, in17.txt, in18.txt, in19.txt, in2.txt, in20.txt, in21.txt, in22.txt, in23.txt, in24.txt, in25.txt, in26.txt, in27.txt, in28.txt, in29.txt, in3.txt, in30.txt, in31.txt, in32.txt, in33.txt, in34.txt, in35.txt, in36.txt, in37.txt, in38.txt, in39.txt, in4.txt, in40.txt, in41.txt, in42.txt, in5.txt, in543.txt, in557.txt, in6.txt, in7.txt, in8.txt, in9.txt, sample1.txt, sample2.txt, sample3.txt
Case Name Status Exec Time Memory
in1.txt AC 8 ms 764 KB
in10.txt WA 3 ms 916 KB
in11.txt AC 4 ms 916 KB
in12.txt AC 3 ms 916 KB
in13.txt AC 3 ms 916 KB
in14.txt AC 4 ms 916 KB
in15.txt AC 3 ms 916 KB
in16.txt AC 3 ms 916 KB
in17.txt AC 3 ms 916 KB
in18.txt AC 3 ms 916 KB
in19.txt AC 3 ms 916 KB
in2.txt AC 2 ms 592 KB
in20.txt AC 3 ms 916 KB
in21.txt AC 3 ms 916 KB
in22.txt AC 4 ms 916 KB
in23.txt AC 4 ms 916 KB
in24.txt AC 4 ms 916 KB
in25.txt AC 4 ms 916 KB
in26.txt WA 4 ms 916 KB
in27.txt AC 4 ms 916 KB
in28.txt AC 3 ms 916 KB
in29.txt AC 3 ms 916 KB
in3.txt AC 3 ms 916 KB
in30.txt AC 3 ms 916 KB
in31.txt AC 3 ms 916 KB
in32.txt AC 3 ms 916 KB
in33.txt AC 3 ms 916 KB
in34.txt AC 4 ms 916 KB
in35.txt AC 4 ms 916 KB
in36.txt AC 4 ms 916 KB
in37.txt AC 4 ms 916 KB
in38.txt AC 4 ms 916 KB
in39.txt AC 3 ms 916 KB
in4.txt AC 4 ms 916 KB
in40.txt AC 3 ms 916 KB
in41.txt AC 3 ms 916 KB
in42.txt AC 3 ms 916 KB
in5.txt AC 4 ms 920 KB
in543.txt AC 2 ms 916 KB
in557.txt AC 2 ms 916 KB
in6.txt AC 1 ms 256 KB
in7.txt AC 3 ms 916 KB
in8.txt AC 4 ms 916 KB
in9.txt AC 3 ms 916 KB
sample1.txt AC 1 ms 256 KB
sample2.txt AC 1 ms 256 KB
sample3.txt AC 1 ms 256 KB