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
#507542#8340. 3 Sumucup-team2307#WA 345ms53800kbC++172.7kb2024-08-06 19:09:332024-08-06 19:09:33

Judging History

你现在查看的是最新测评结果

  • [2024-09-20 10:20:30]
  • hack成功,自动添加数据
  • (/hack/848)
  • [2024-08-06 19:09:33]
  • 评测
  • 测评结果:WA
  • 用时:345ms
  • 内存:53800kb
  • [2024-08-06 19:09:33]
  • 提交

answer

#include <bits/stdc++.h>
#pragma GCC optimize("Ofast")
#pragma GCC target("avx2")
using namespace std;
using ll = long long;
const int num_mods = 4;
const array<int, num_mods> mods = {
    int(1e9)+9, 998244853, 696969569, int(1e9) + 69
};

array<int, num_mods> transform(vector<int> digits) {
    array<int, num_mods> res;
    for(int M = 0; M < num_mods; M++) {
        ll cur = 1, ans = 0;
        for(auto i : digits) {
            ans = (ans + cur * 1ll * i) % mods[M];
            cur = cur*10ll % mods[M];
        }
        res[M] = ans;
    }
    return res;
}

int main() {
    ios_base::sync_with_stdio(0);
    cout.tie(0);
    int n, k;
    cin >> n >> k;
    vector<string> s(n);
    vector<vector<int>> nums;
    for(auto &x : s) {
        cin >> x;
        reverse(x.begin(), x.end());
        vector<int> digits(k);
        for(int i = 0; i < x.size(); i++) {
            digits[i % k] += x[i] - '0';
        }
        auto carry = [&]() {
            for(int i = 0; i < digits.size(); i++) {
                if(digits[i] >= 10) {
                    if(i + 1 == digits.size()) digits.push_back(0);
                    digits[i + 1] += digits[i] / 10;
                }
                digits[i] %= 10;
            }
        };
        while(digits.size() > k) {
            if(digits.back() == 0) digits.pop_back();
            else for(int i = k; i < digits.size(); i++) {
                digits[i % k] += digits[i];
                digits[i] = 0;
            }
        }
        digits.resize(k);
        nums.push_back(digits);
    }
    vector<array<int, num_mods>> T(n);
    for(int i = 0; i < n; i++) T[i] = transform(nums[i]);
    
    vector<int> MD(k, 9);
    auto M = transform(MD);

    auto solve = [&](array<int, num_mods> X) {
        // map<array<int, 
        // for(auto i : X) cout << i << " "; cout << endl;
        int ans = 0;
        for(int i = 0; i < n; i++) {
            // cout << T[i][0] << endl;
            map<array<int, num_mods>, int> cnt;
            for(int j = 0; j <= i; j++) {
                cnt[T[j]]++;
                array<int, num_mods> need;
                for(int t = 0; t < num_mods; t++)
                    need[t] = (X[t] - T[i][t] - T[j][t] + 3ll * mods[t]) % mods[t];
                ans += cnt[need];
                // cout << i << " " << j << " "; for(auto x : need) cout << x << " "; cout << endl;
            }
        }
        // cout << ans << endl << endl;
        return ans;
    };
    ll ans = 0;
    for(int i = 0; i < 3; i++) {
        auto X = M;
        for(int t = 0; t < num_mods; t++) X[t] = X[t] * 1ll * i % mods[t];
        ans += solve(X);
    }
    cout << ans << '\n';
}

详细

Test #1:

score: 100
Accepted
time: 0ms
memory: 3612kb

input:

4 1
0
1
10
17

output:

3

result:

ok 1 number(s): "3"

Test #2:

score: 0
Accepted
time: 104ms
memory: 5952kb

input:

500 859
7118711592236878297922359501613604144948355616986970837340677671376753603836852811886591300370143151943368529129749813118476151865844255212534355441611481420938483178075143062691345257288242460282715389758789648541099090735875617822348551942134616963557723055980260082230902505269975518146286...

output:

0

result:

ok 1 number(s): "0"

Test #3:

score: 0
Accepted
time: 345ms
memory: 53800kb

input:

500 17336
11871159223687829792235950161360414494835561698697083734067767137675360383685281188659130037014315194336852912974981311847615186584425521253435544161148142093848317807514306269134525728824246028271538975878964854109909073587561782234855194213461696355772305598026008223090250526997551814628...

output:

0

result:

ok 1 number(s): "0"

Test #4:

score: -100
Wrong Answer
time: 86ms
memory: 15016kb

input:

500 1
751324443898124078584847834484321089092662321556147445230263526014359393841194947303407593948729802551881289193716611867931891257925091769456350249725997883453296895094445731130479434019358742162771547784250401546380268386074363779242500860317042151185119666027858022664683818314351285215150806...

output:

0

result:

wrong answer 1st numbers differ - expected: '2327631', found: '0'