Submission #198436

#	Time	Username	Problem	Language	Result	Execution time	Memory
198436		model_code	Ones (LMIO17_vienetai)	C++17	100 / 100	50 ms	376 KiB

vienetai

#include <iostream>
#include <cstdlib>
#include <vector>
using namespace std;

const int NOT_DIV = -1;
int N, M, D;

void print_and_exit(int data) {
    if (data == NOT_DIV) {
        cout << "NESIDALO\n";
    }
    else {
        cout << data << '\n';
    }
    exit(0);
}

void advance(int &rem, int &sum, int digit) {
    rem = rem * 10 + digit;
    sum += rem / D;
    rem %= D;
}

int main(int argc, char const *argv[]) {
    cin >> N >> M >> D;

    if (N % M != 0) {
        print_and_exit(NOT_DIV);
    }

    int groups = N / M, zeros = M - 1;
    if (D == 1) {
        print_and_exit(groups);
    }

    int sum = 0, rem = 1;
    vector <bool> saw_rem(10, false);
    for (int g = 2; g <= groups; g++) {
        for (int z = 0; z < zeros; z++) {
            advance(rem, sum, 0);
        }
        advance(rem, sum, 1);

        if (rem == 0) {
            print_and_exit((groups % g == 0) ? sum * (groups / g) : NOT_DIV);
        }
        else if (saw_rem[rem]) {
            print_and_exit(NOT_DIV);
        }
        else {
            saw_rem[rem] = true;
        }
    }

    print_and_exit((rem == 0) ? sum : NOT_DIV);
    return 0;
}

• Subtask 1: 24 / 24
• Subtask 2: 30 / 30
• Subtask 3: 27 / 27
• Subtask 4: 10 / 10
• Subtask 5: 9 / 9