結果
問題 | No.1519 Diversity |
ユーザー |
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提出日時 | 2021-05-28 23:10:46 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 95 ms / 2,000 ms |
コード長 | 2,170 bytes |
コンパイル時間 | 1,189 ms |
コンパイル使用メモリ | 116,868 KB |
最終ジャッジ日時 | 2025-01-21 20:18:21 |
ジャッジサーバーID (参考情報) |
judge4 / judge1 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 1 |
other | AC * 15 |
コンパイルメッセージ
main.cpp: In function ‘int main()’: main.cpp:91:8: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result] 91 | scanf("%d", &N); | ~~~~~^~~~~~~~~~
ソースコード
#include <cmath> #include <cstdio> #include <cstdlib> #include <cstring> #include <algorithm> #include <bitset> #include <complex> #include <iostream> #include <map> #include <numeric> #include <queue> #include <set> #include <stack> #include <string> #include <unordered_map> #include <unordered_set> #include <vector> #include <cassert> #include <functional> using ll = long long; using namespace std; template<typename A, typename B> bool chmin(A &a, const B b) { if (a <= b) return false; a = b; return true; } template<typename A, typename B> bool chmax(A &a, const B b) { if (a >= b) return false; a = b; return true; } #ifndef LOCAL #define debug(...) ; #else #define debug(...) cerr << __LINE__ << " : " << #__VA_ARGS__ << " = " << _tostr(__VA_ARGS__) << endl; template<typename T> ostream &operator<<(ostream &out, const vector<T> &v); template<typename T1, typename T2> ostream &operator<<(ostream &out, const pair<T1, T2> &p) { out << "{" << p.first << ", " << p.second << "}"; return out; } template<typename T> ostream &operator<<(ostream &out, const vector<T> &v) { out << '{'; for (const T &item : v) out << item << ", "; out << "\b\b}"; return out; } void _tostr_rec(ostringstream &oss) { oss << "\b\b \b"; } template<typename Head, typename... Tail> void _tostr_rec(ostringstream &oss, Head &&head, Tail &&...tail) { oss << head << ", "; _tostr_rec(oss, forward<Tail>(tail)...); } template<typename... T> string _tostr(T &&...args) { ostringstream oss; int size = sizeof...(args); if (size > 1) oss << "{"; _tostr_rec(oss, forward<T>(args)...); if (size > 1) oss << "}"; return oss.str(); } #endif constexpr int mod = 1'000'000'007; //1e9+7(prime number) constexpr int INF = 1'000'000'000; //1e9 constexpr ll LLINF = 2'000'000'000'000'000'000LL; //2e18 constexpr int SIZE = 200010; int main() { int N; scanf("%d", &N); vector<pair<int, int>> ans; for (int i = 0; i < N; i++) { for (int j = i + 1; j < N - i; j++) { ans.push_back({i, j}); } } cout << ans.size() << endl; for (auto e : ans) { cout << e.first + 1 << " " << e.second + 1 << endl; } return 0; }