Submission #721183

#	Time	Username	Problem	Language	Result	Execution time	Memory
721183		vjudge1	Zamjena (COCI18_zamjena)	C++17	14 / 70	9 ms	1492 KiB

zamjena

#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define ld long double
#define ll long long
#define S second
#define F first

using namespace __gnu_pbds;
using namespace std;

typedef tree<long long, null_type, less_equal<long long>,
    rb_tree_tag, tree_order_statistics_node_update> Tree;

const ll INF = 9223372036854775807LL;
const ll inf = 2147483647;
const ll MAXN = 200010;
const ll MOD = 1e9 + 7;
const ld PI = acos(-1);
const ll NROOT = 320; 

ll binpow(ll a, ll b) {
  ll res = 1;
  for (;b; b /= 2, a *= a, a %= MOD)
    if (b & 1) res *= a, res %= MOD;
  return res % MOD;
}

ll gcd(ll a, ll b) {return b ? gcd(b, a % b) : a;}
ll lcm(ll a, ll b) {return a * b / gcd(a, b);}
ll invmod(ll a) {return binpow(a, MOD - 2);}

int stroi(string s) {
  int ans = 0;
  for (int i = 1; i < s.size(); i ++) {
    ans *= 10;
    ans += s[i] - '0';
  }
  return ans;
}

bool is(string b) {
  if (b[0] >= 'a' && b[0] <= 'z') {
    return 1;
  }
  return 0;
}

int32_t main () {
  ios_base::sync_with_stdio(false); 
  cin.tie(nullptr);

  int n; cin >> n;

  vector<string> a(n + 1), b(n + 1);
  map<string, int> v;

  for (int i = 1; i <= n; i ++) {
    cin >> a[i];
    if (is(a[i])) {
      v[a[i]] = -1;
    }
  }
  for (int i = 1; i <= n; i ++) {
    cin >> b[i];
    if (is(b[i])) {
      v[b[i]] = -1;
    }
  }

  for (int i = 1; i <= n; i ++) {
    if (!is(a[i]) && !is(b[i])) {
      if (a[i] != b[i]) {
        cout << "NE\n";
        return 0;
      }
    } else if (is(a[i])) {
      if (is(b[i])) {
        if (v[a[i]] != -1) {
          if (v[b[i]] == -1) v[b[i]] == v[a[i]];
          else if (v[b[i]] != v[a[i]]) {
            cout << "NE\n";
            return 0;
          }
        }
      } else {
        if (v[a[i]] != -1 && v[a[i]] != stroi(b[i])) {
          cout << "NE\n";
          return 0;
        } else if (v[a[i]] == -1) {
          v[a[i]] = stroi(b[i]);
        }
      }
    } else if (is(b[i])) {
      if (v[b[i]] == -1) v[b[i]] = stroi(a[i]);
      else if (v[b[i]] != -1 && v[b[i]] != stroi(a[i])) {
        cout << "NE\n";
        return 0;
      }
    }
  }

  cout << "DA\n";

  return 0;
}

Compilation message (stderr)

zamjena.cpp: In function 'int stroi(std::string)':
zamjena.cpp:35:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |   for (int i = 1; i < s.size(); i ++) {
      |                   ~~^~~~~~~~~~
zamjena.cpp: In function 'int32_t main()':
zamjena.cpp:80:38: warning: value computed is not used [-Wunused-value]
   80 |           if (v[b[i]] == -1) v[b[i]] == v[a[i]];

• Subtask 1: 14 / 14
• Subtask 2: 0 / 14
• Subtask 3: 0 / 14
• Subtask 4: 0 / 14
• Subtask 5: 0 / 14