提出 #1041117

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ソースコード 拡げる

#include <algorithm>
#include <cassert>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <cmath>
#include <iostream>
#include <vector>
#include <sstream>
#include <set>
using namespace std;
using ll = long long;

class range {private: struct I{int x;int operator*(){return x;}bool operator!=(I& lhs){return x<lhs.x;}void operator++(){++x;}};I i,n;
public:range(int n):i({0}),n({n}){}range(int i,int n):i({i}),n({n}){}I& begin(){return i;}I& end(){return n;}};

int main() {
  int x, y;
  while (cin >> x >> y) {
    int res = 2100000000;
    // x->y
    if (x <= y) res = min(res, y - x);
    // x->-x->y
    if (-x <= y) res = min(res, 1 + y - (-x));
    // x->-y->y
    if (x <= -y) res = min(res, 1 + (-y - x));
    // x->-x->-y->y
    if (-x <= -y) res = min(res, 2 + (-y - (-x)));

    cout << res << endl;
  }
}

提出情報

ジャッジ結果