結果
| 問題 |
No.269 見栄っ張りの募金活動
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2017-07-04 21:47:04 |
| 言語 | C++17(gcc12) (gcc 12.3.0 + boost 1.87.0) |
| 結果 |
TLE
(最新)
AC
(最初)
|
| 実行時間 | - |
| コード長 | 3,983 bytes |
| コンパイル時間 | 11,850 ms |
| コンパイル使用メモリ | 267,660 KB |
| 最終ジャッジ日時 | 2025-01-05 01:09:00 |
|
ジャッジサーバーID (参考情報) |
judge3 / judge5 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 21 TLE * 1 |
コンパイルメッセージ
main.cpp: In member function '{anonymous}::MaiScanner& {anonymous}::MaiScanner::operator>>(std::string&)':
main.cpp:72:9: warning: no return statement in function returning non-void [-Wreturn-type]
72 | }
| ^
ソースコード
#pragma GCC optimize ("O3")
#pragma GCC target ("avx")
#include "bits/stdc++.h" // define macro "/D__MAI"
using namespace std;
typedef long long int ll;
#define debugv(v) printf("L%d %s => ",__LINE__,#v);for(auto e:v){cout<<e<<" ";}cout<<endl;
#define debugm(m) printf("L%d %s is..\n",__LINE__,#m);for(auto v:m){for(auto e:v){cout<<e<<" ";}cout<<endl;}
#define debuga(m,w) printf("L%d %s is => ",__LINE__,#m);for(int x=0;x<(w);x++){cout<<(m)[x]<<" ";}cout<<endl;
#define debugaa(m,w,h) printf("L%d %s is..\n",__LINE__,#m);for(int y=0;y<(h);y++){for(int x=0;x<(w);x++){cout<<(m)[x][y]<<" ";}cout<<endl;}
#define debugaar(m,w,h) printf("L%d %s is..\n",__LINE__,#m);for(int y=0;y<(h);y++){for(int x=0;x<(w);x++){cout<<(m)[y][x]<<" ";}cout<<endl;}
#define ALL(v) (v).begin(),(v).end()
#define repeat(l) for(auto cnt=0;cnt<(l);++cnt)
#define iterate(b,e) for(auto cnt=(b);cnt!=(e);++cnt)
#define MD 1000000007ll
#define PI 3.1415926535897932384626433832795
template<typename T1, typename T2>
ostream& operator <<(ostream &o, const pair<T1, T2> p) { o << "(" << p.first << ":" << p.second << ")"; return o; }
#define TIME chrono::system_clock::now()
#define MILLISEC(t) (chrono::duration_cast<chrono::milliseconds>(t).count())
namespace {
std::chrono::system_clock::time_point ttt;
void tic() { ttt = TIME; }
void toc() { fprintf(stderr, "TIME : %lldms\n", MILLISEC(TIME - ttt)); }
std::chrono::system_clock::time_point tle = TIME;
#ifdef __MAI
void safe_tle(int msec) { assert(MILLISEC(TIME - tle) < msec); }
#else
#define safe_tle(k) ;
#endif
}
#ifdef __MAI
#define getchar_unlocked getchar
#define putchar_unlocked putchar
#endif
#ifdef __VSCC
#define getchar_unlocked _getchar_nolock
#define putchar_unlocked _putchar_nolock
#endif
namespace {
#define isvisiablechar(c) (0x21<=(c)&&(c)<=0x7E)
class MaiScanner {
public:
template<typename T>
void input_integer(T& var) {
var = 0;
T sign = 1;
int cc = getchar_unlocked();
for (; cc<'0' || '9'<cc; cc = getchar_unlocked())
if (cc == '-') sign = -1;
for (; '0' <= cc&&cc <= '9'; cc = getchar_unlocked())
var = (var << 3) + (var << 1) + cc - '0';
var = var*sign;
}
inline int c() { return getchar_unlocked(); }
inline MaiScanner& operator>>(int& var) {
input_integer<int>(var);
return *this;
}
inline MaiScanner& operator>>(long long& var) {
input_integer<long long>(var);
return *this;
}
inline MaiScanner& operator>>(string& var) {
int cc = getchar_unlocked();
for (; !isvisiablechar(cc); cc = getchar_unlocked());
for (; isvisiablechar(cc); cc = getchar_unlocked())
var.push_back(cc);
}
};
}
MaiScanner scanner;
ll n, ss, kk;
ll dp[102][20002];
ll dfs(ll index, ll coin) {
// static unordered_map<ll,ll> memo;
if (index == n){
return coin == 0;
}
// ll key = (index<<32) | coin;
// if (memo.count(key)) return memo[key];
if (dp[index][coin]) return dp[index][coin] - 1;
ll prev = index == 0 ? -kk : 0;
ll result = 0;
for (ll vel = prev + kk; coin - vel*(n - index) >= 0; ++vel) {
result = (result + dfs(index + 1, coin - vel*(n - index))) % MD;
}
//return memo[key] = result;
dp[index][coin] = result + 1;
return result;
}
// dfs(0,ss,-kk);
int main() {
cin >> n >> ss >> kk;
// fill(dp[0], dp[0] + ss + 1, 1);
//
// for (int i = 1; i < n ; ++i) {
// for (int coin = 0; coin < ss; ++coin) {
// if (dp[i - 1][coin])
// for (int vel = kk; coin + vel*(n - i) <= ss; ++vel) {
// dp[i][coin + vel*(n - i)] += dp[i - 1][coin];
// }
// }
// }
// cout << dp[n - 1][ss];
cout << dfs(0, ss) << endl;
return 0;
}