제출 #100383

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
100383		cvele	Zamjena (COCI18_zamjena)	C++14	70 / 70	158 ms	11128 KiB

zamjena

#include <iostream>
#include <sstream>
#include <cstdio>
#include <cstdlib>
#include <cmath>
#include <cctype>
#include <cstring>
#include <iomanip>
#include <bitset>
#include <algorithm>
#include <vector>
#include <stack>
#include <queue>
#include <deque>
#include <set>
#include <list>
#include <map>

using namespace std;

const int N = 100005;

int n;
string a[N], b[N];
int cnt = 1;
int p[N];
int what[N];
map <string, int> id;

int fs(int u) {
  return (p[u] == u ? u : p[u] = fs(p[u]));
}

void join(int x, int y) {
  int aa = fs(x), bb = fs(y);
  if (aa == bb) return;
  if (what[aa] && what[bb] && (what[aa] != what[bb])) {
    cout << "NE" << endl;
    exit(0);
  }
  if (!what[aa]) {
    p[aa] = bb;
  } else {
    p[bb] = aa;
  }
}

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

int main() {
  cin >> n;
  for (int i = 0; i < N; i++) p[i] = i;
  for (int i = 0; i < n; i++) {
    cin >> a[i];
    if (!id[a[i]]) {
      id[a[i]] = cnt++;
    }
    if (isdigit(a[i][0])) {
      what[id[a[i]]] = tonum(a[i]);
    }
  }
  for (int i = 0; i < n; i++) {
    cin >> b[i];
    if (!id[b[i]]) {
      id[b[i]] = cnt++;
    }
    if (isdigit(b[i][0])) {
      what[id[b[i]]] = tonum(b[i]);
    }
  }
  for (int i = 0; i < n; i++) {
    join(id[a[i]], id[b[i]]);
  }
  cout << "DA" << endl;
  return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

zamjena.cpp: In function 'int tonum(std::__cxx11::string)':
zamjena.cpp:50:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int i = 0; i < a.size(); i++) {
                   ~~^~~~~~~~~~

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