QOJ.ac

QOJ

ID题目提交者结果用时内存语言文件大小提交时间测评时间
#714668#5460. Sum of NumbersqtoqWA 40ms6184kbC++173.4kb2024-11-06 02:03:212024-11-06 02:03:21

Judging History

你现在查看的是最新测评结果

  • [2024-11-06 02:03:21]
  • 评测
  • 测评结果:WA
  • 用时:40ms
  • 内存:6184kb
  • [2024-11-06 02:03:21]
  • 提交

answer

#include <bits/stdc++.h>


using namespace std;

template<typename T_container, typename T = typename enable_if<!is_same<T_container, string>::value, typename T_container::value_type>::type> ostream& operator<<(ostream &os, const T_container &v) { os << '{'; string sep; for (const T &x : v) os << sep << x, sep = ", "; return os << '}'; }
 void dbg_out() { cerr << endl; }
template<typename Head, typename... Tail> void dbg_out(Head H, Tail... T) { cerr << ' ' << H; dbg_out(T...); }
#ifdef ONPC
  #define deb(...) cerr << '[' << __FILE__ << ':' << __LINE__ << "] (" << #__VA_ARGS__ << "):", dbg_out(__VA_ARGS__)
#else
  #pragma GCC optimize("O3,unroll-loops")
  #pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
  #define deb(...)
#endif

// c++ short types
#define vt vector
//typedef long long ll;
typedef long double ld;

void whattime() { cout << "finished in " << clock() * 1.0 / CLOCKS_PER_SEC << " sec" << endl; }
// const int mod = 1e9 + 7;
const int mod = 998244353;
const int inf = 1e9;
const int64_t infll = 1e13;
bool debug = false;
const ld eps = 1e-9;
const ld pi = acos(-1);
mt19937_64 rng((int) chrono::steady_clock::now().time_since_epoch().count());

const int maxn = 2e5, K = 10;
int subvalue[maxn][K];

struct num {
  const int base = 1000'000'000;
  vt<int> elems;
  num(int x = 0) {
    elems = {x};
  }
  num(int l, int r) {
    for(int i = l; i <= r; i += 9) {
      elems.push_back(subvalue[i][min(9, r-i+1)]);
    }
    if(elems.empty()) {
      elems = {0};
    }
  }
  void add(num &b) {
    int carry = 0;
    for(int i = 0; i < max(elems.size(), b.elems.size()) || carry > 0; ++i) {
      if(elems.size() == i) {
        elems.push_back(0);
      }
      elems[i] += carry + (i < b.elems.size() ? b.elems[i] : 0);
      carry = elems[i] >= base;
      if(carry) {
        elems[i] -= base;
      }
    }
  }
  void print() {
    while(not elems.size() > 1 and elems.back() == 0) {
      elems.pop_back();
    }
    if(elems.empty()) {
      elems.push_back(0);
    }
    for(int i = elems.size() - 1; i >= 0; --i) {
      cout << elems[i];
    }
    cout << '\n';
  }
};

bool cmp(num &a, num &b) {
  if(a.elems.size() != b.elems.size()) {
    return a.elems.size() < b.elems.size();
  }
  for(int i = a.elems.size()-1; i>=0; --i) {
    if(a.elems[i] != b.elems[i]){
      return a.elems[i] < b.elems[i];
    }
  }
  return true;
}

void solve() {
  int n, k;
  cin >> n >> k;
  string s; cin >> s;
  for(int i = 0; i < n; ++i) {
    for(int j = 1; j < K; ++j) {
      subvalue[i][j] = stoi(s.substr(i, j));
    }
  }
  int z = n / (k+1);
  num res(0, s.size()-1);
  auto Dfs = [&](auto self, int id, int sum, num val = 0) -> void {
    if(sum + (k-id+1)*(z-1) > n || sum + (k-id+1)*(z+1) < n) {
      return ;
    }
    if(!cmp(val, res)) {
      return ;
    }
    if(sum >= n || id == k + 1) {
      if(id == k + 1 and sum == n) {
        swap(res.elems, val.elems);
      }
      return ;
    }
    for(auto y: {z-1, z, z+1}) if(y > 0) {
      num tmp = val, addend = {sum, sum + y - 1};
      tmp.add(addend);
      self(self, id + 1, sum + y, tmp);
    }
  };
  Dfs(Dfs, 0, 0);
  res.print();
}

int main()
{
	ios::sync_with_stdio(false); cin.tie(nullptr);

	int tt = 1;;
	if(debug) {
		tt = 1e3;
	} else {
		cin >> tt;
	}

	for(int t = 0; t < tt; ++t) {
		solve();
	}
	
#ifdef ONPC
	whattime();
#endif
	
	return 0;
}


詳細信息

Test #1:

score: 100
Accepted
time: 0ms
memory: 3864kb

input:

2
8 1
45455151
2 1
42

output:

9696
6

result:

ok 2 lines

Test #2:

score: -100
Wrong Answer
time: 40ms
memory: 6184kb

input:

10
1301 6
56328399613959594774559774218276494124991536454496431869449134772679831477279356599352619469813771742358572734317965823527349354276551857226632977613336815474383422853946661428822284645652423563864641261338984158269966469425994769486371736593879954275146732544891889693921182364554588732946...

output:

3133134925250679866802719196909798377930722423508575800651748225191735990933507603809414526439565034352629356630727749578287350939159587940686764065879913860797067738106640794761837551
1257315146561308627813869366354897220604851013844287825194156529733440079645117121292160449344404306829731802716046...

result:

wrong answer 1st lines differ - expected: '286183755510664079479706773787...6909797866802717925250679901255', found: '313313492525067986680271919690...3860797067738106640794761837551'