2019 年百度之星·程序设计大赛 - 初赛二

1001 度度熊与数字

#pragma comment(linker, "/STACK:36777216")

#include <bits/stdc++.h>

#define REP(i,n) for(int i=0;i<int(n);++i)
#define FOR(i,a,b) for(int i=int(a);i<int(b);++i)
#define DWN(i,b,a) for(int i=int(b);i>=int(a);--i)

/// type define
typedef double DB;
typedef long long LL;
typedef std::vector<int>VI;
typedef std::vector<LL>VLL;
typedef std::pair<int, int>PII;
typedef std::pair<LL, LL>PLL;
typedef std::vector<PII >VPII;

/// const
static const double eps = 1e-8;
static const double pi = acos(-1.0);
static const int inf = 0x3f3f3f3f;
static const LL INF = 0x3f3f3f3f3f3f3f3f;

/// common statement
#define PB push_back
#define MP std::make_pair
#define fi first
#define se second

/****************************************************************/

const int maxn = 2e6 + 7;
const LL MOD = 1e9 + 7;

bool chk(LL x, LL n) {
  int s = 0;
  while(n) {
    s += n % 10;
    n /= 10;
  }
  return s % x == 0;
}

void solve() {
  /*********** start your code here. ************/
  LL n;
  std::cin >> n;
  VI ans;
  for(LL x = 1; x * x <= n; ++x) {
    if(n % x)
      continue;
    if(chk(x, n))
      ans.PB(x);
    if(chk(n / x, n) && x != n / x)
      ans.PB(n / x);
  }
  std::cout << ans.size() << "\n";
  std::sort(ans.begin(),ans.end());
  for(int i = 0, sz = ans.size(); i < sz; ++i)
    std::cout << ans[i] << (i == sz - 1 ? "\n" : " ");
}

void init() {

}

int main() {
  //std::ios::sync_with_stdio(false);
  //std::cin.tie(0);
  //init();
  int T;
  std::cin >> T;
  while(T--)
    solve();
  return 0;
}

1002 度度熊与排列

#pragma comment(linker, "/STACK:36777216")

#include <bits/stdc++.h>

#define REP(i,n) for(int i=0;i<int(n);++i)
#define FOR(i,a,b) for(int i=int(a);i<int(b);++i)
#define DWN(i,b,a) for(int i=int(b);i>=int(a);--i)

/// type define
typedef double DB;
typedef long long LL;
typedef std::vector<int>VI;
typedef std::vector<LL>VLL;
typedef std::pair<int, int>PII;
typedef std::pair<LL, LL>PLL;
typedef std::vector<PII >VPII;

/// const
static const double eps = 1e-8;
static const double pi = acos(-1.0);
static const int inf = 0x3f3f3f3f;
static const LL INF = 0x3f3f3f3f3f3f3f3f;

/// common statement
#define PB push_back
#define MP std::make_pair
#define fi first
#define se second

/****************************************************************/

const int maxn = 1e3 + 7;
const LL MOD = 1e9 + 7;

int mat[maxn][maxn];
void parse(std::string is, std::string os) {
  int sz = is.length();
  REP(i, sz)REP(j, sz)if(is[i] == os[j])
    mat[i][j]++;
}

std::vector<int>edges[maxn];
bool vis[maxn];
int boy[maxn];
int gril[maxn];

bool dfs(int v) {
  int len = edges[v].size();
  for(int i = 0; i < len; i++) {
    int end = edges[v][i];
    if(!vis[end]) {
      vis[end] = 1;
      if(boy[end] == 0 || dfs(boy[end])) {
        boy[end] = v;
        gril[v] = end;
        return 1;
      }
    }
  }
  return 0;
}

void solve() {
  /*********** start your code here. ************/
  int n, m;
  std::cin >> n >> m;
  std::cin.get();
  REP(i, maxn)REP(j, maxn) mat[i][j] = 0;
  for(int i = 0; i < n; ++i) {
    std::string is, os;
    getline(std::cin, is);
    getline(std::cin, os);
    parse(is, os);
  }

  REP(i,m) edges[i].clear();
  REP(i, m)REP(j, m) {
    mat[i][j] = mat[i][j] == n ? n : 0;
    if(mat[i][j])
      edges[i].PB(j);
  }
  //REP(i,m) REP(j,m) std::cout << mat[i][j] << (j == m-1 ? "\n" : " ");

  int ans = 0;
  memset(boy,0,sizeof(boy));
  for(int i = m - 1; i >= 0; i--) {
    memset(vis, 0, sizeof(vis));
    if(dfs(i)) {
      ans++;
    }
  }

  if(ans != m) {
    std::cout << "-1\n";
  } else {
    REP(i,m)std::cout << gril[i]+1 << (i == m-1 ? "\n" : " ");
  }
}

void init() {

}

int main() {
  //std::ios::sync_with_stdio(false);
  //std::cin.tie(0);
  //init();
  int T;
  std::cin >> T;
  while(T--)
    solve();
  return 0;
}

1003 度度熊与运算式 1

#pragma comment(linker, "/STACK:36777216")

#include <bits/stdc++.h>

#define REP(i,n) for(int i=0;i<int(n);++i)
#define FOR(i,a,b) for(int i=int(a);i<int(b);++i)
#define DWN(i,b,a) for(int i=int(b);i>=int(a);--i)

/// type define
typedef double DB;
typedef long long LL;
typedef std::vector<int>VI;
typedef std::vector<LL>VLL;
typedef std::pair<int, int>PII;
typedef std::pair<LL, LL>PLL;
typedef std::vector<PII >VPII;

/// const
static const double eps = 1e-8;
static const double pi = acos(-1.0);
static const int inf = 0x3f3f3f3f;
static const LL INF = 0x3f3f3f3f3f3f3f3f;

/// common statement
#define PB push_back
#define MP std::make_pair
#define fi first
#define se second

/****************************************************************/

const int maxn = 1e6 + 7;
const LL MOD = 1e9 + 7;

VI ans(maxn);
int cal(const char *str) {
  int t, cur = 0;
  ans.clear();
  ans.PB(1);
  for(int i = 0, sz = strlen(str); i < sz; i++) {
    switch(str[i]) {
    case '?':
      ans[cur]++;
      break;
    case '^':
      ans.PB(1);
      cur++;
      break;
    }
  }
  int ret(0);
  //for(auto i : ans) std::cout << i << " ";
  //std::cout << "\n";
  int b[32] = {0};
  memset(b, 0, sizeof(b));
  for(auto i : ans) {
    for(int j = 30; j > 0; --j)
      if(i & (1 << j))
        b[j]++;
  }
  for(int i = 30; i > 0; --i) {
    if(b[i] ) {
      b[i - 1] += (b[i] - 1)*2;
      b[i] = 1, ret |= (1 << i);
    }
  }
  ret |= ((strlen(str) + 1 & 1) ? 1 : 0);
  return ret;
}

void solve() {
  /*********** start your code here. ************/
  std::string str, fs;
  getline(std::cin, str);
  std::cout << cal(str.c_str()) << "\n";
}

void init() {

}

int main() {
  std::ios::sync_with_stdio(false);
  std::cin.tie(0);
  //init();
  int T;
  std::cin >> T;
  std::cin.get();
  while(T--)
    solve();
  return 0;
}

原文地址：https://www.cnblogs.com/Forgenvueory/p/11379432.html