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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 |
---|---|---|---|---|---|---|---|---|---|
#507529 | #8340. 3 Sum | ucup-team2307# | WA | 363ms | 53792kb | C++17 | 2.6kb | 2024-08-06 18:59:15 | 2024-08-06 18:59:16 |
Judging History
answer
#include <bits/stdc++.h>
#pragma GCC optimize("Ofast")
#pragma GCC target("avx2")
using namespace std;
using ll = long long;
const int num_mods = 2;
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;
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++) {
// for(auto d : T[i]) cout << d << ".. "; cout << endl;
for(int j = i; j < n; j++) {
for(int k = j; k < n; k++) {
bool ok = 1;
for(int t = 0; t < num_mods; t++)
ok &= (T[i][t] + T[j][t] + T[k][t]) % mods[t] == X[t];
// if(ok) cout << i << " " << j << " " << k <<endl;
ans += ok;
}
}
}
// 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: 3628kb
input:
4 1 0 1 10 17
output:
3
result:
ok 1 number(s): "3"
Test #2:
score: 0
Accepted
time: 224ms
memory: 5728kb
input:
500 859 7118711592236878297922359501613604144948355616986970837340677671376753603836852811886591300370143151943368529129749813118476151865844255212534355441611481420938483178075143062691345257288242460282715389758789648541099090735875617822348551942134616963557723055980260082230902505269975518146286...
output:
0
result:
ok 1 number(s): "0"
Test #3:
score: 0
Accepted
time: 363ms
memory: 53792kb
input:
500 17336 11871159223687829792235950161360414494835561698697083734067767137675360383685281188659130037014315194336852912974981311847615186584425521253435544161148142093848317807514306269134525728824246028271538975878964854109909073587561782234855194213461696355772305598026008223090250526997551814628...
output:
0
result:
ok 1 number(s): "0"
Test #4:
score: -100
Wrong Answer
time: 250ms
memory: 14972kb
input:
500 1 751324443898124078584847834484321089092662321556147445230263526014359393841194947303407593948729802551881289193716611867931891257925091769456350249725997883453296895094445731130479434019358742162771547784250401546380268386074363779242500860317042151185119666027858022664683818314351285215150806...
output:
0
result:
wrong answer 1st numbers differ - expected: '2327631', found: '0'