Submission #971462

#	Time	Username	Problem	Language	Result	Execution time	Memory
971462		yeediot	Pinball (JOI14_pinball)	C++17	0 / 100	1 ms	348 KiB

pinball

#include<bits/stdc++.h>
using namespace std;
#define int long long
#define F first
#define S second
#define all(x) x.begin(),x.end()
#define pii pair<int,int>
#define pb push_back
#define sz(x) (int)(x.size())
#define chmin(x,y) x=min(x,y)
#define chmax(x,y) x=max(x,y)
#define vi vector<int>
#define vp vector<pii>
#define vvi vector<vi>
#define ykh mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count())
#define __lg(x) 63-__builtin_clzll(x)
#define pow2(x) (1LL<<x)
void __print(int x) {cerr << x;}
void __print(float x) {cerr << x;}
void __print(double x) {cerr << x;}
void __print(long double x) {cerr << x;}
void __print(char x) {cerr << '\'' << x << '\'';}
void __print(const char *x) {cerr << '\"' << x << '\"';}
void __print(const string &x) {cerr << '\"' << x << '\"';}
void __print(bool x) {cerr << (x ? "true" : "false");}

template<typename T, typename V>
void __print(const pair<T, V> &x) {cerr << '{'; __print(x.first); cerr << ','; __print(x.second); cerr << '}';}
template<typename T>
void __print(const T &x) {int f = 0; cerr << '{'; for (auto &i: x) cerr << (f++ ? "," : ""), __print(i); cerr << "}";}
void _print() {cerr << "]\n";}
template <typename T, typename... V>
void _print(T t, V... v) {__print(t); if (sizeof...(v)) cerr << ", "; _print(v...);}
#ifdef local
void setio(){freopen("/Users/iantsai/Library/Mobile Documents/com~apple~CloudDocs/cpp/Empty.md","r",stdin);}
#define debug(x...) cerr << "[" << #x << "] = ["; _print(x)
#else
void setio(){}
#define debug(x...)
#endif
void setIO(string s) {
    freopen((s + ".in").c_str(), "r", stdin);
    freopen((s + ".out").c_str(), "w", stdout);
}
struct line{
    int a,b;
    int operator()(const int x)const{
        return a*x+b;
    }
};
bool check(line l1,line l2,line l3){
    return (l3.b-l2.b)*(l1.a-l2.a)<=(l2.b-l1.b)*(l2.a-l3.a);
}
struct node{
    int a,b,c,d;
};
vector<node>v;
vector<int>temp;
int get(int x){
    return lower_bound(all(temp),x)-temp.begin();
}
signed main(){
    setio();
    ios::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
    int n,m;
    cin>>n>>m;
    temp.pb(1);
    temp.pb(m);
    for(int i=1;i<=n;i++){
        int a,b,c,d;
        cin>>a>>b>>c>>d;
        v.pb({a,b,c,d});
        temp.pb(a);
        temp.pb(b);
        temp.pb(c);
    }
    sort(all(temp));
    temp.resize(unique(all(temp))-temp.begin());
    int k=sz(temp);
    int dp[n+1][k][k];
    memset(dp,0x3f3f3f3f,sizeof(dp));
    for(int i=n-1;i>=0;i--){
        dp[i][get(v[i].a)][get(v[i].b)]=v[i].d;
        int a=get(v[i].a);
        int b=get(v[i].b);
        int c=get(v[i].c);
        for(int l=0;l<k;l++){
            for(int r=0;r<k;r++){
                if(r<=l){
                    dp[i][l][r]=0;
                    continue;
                }
                chmin(dp[i][l][r],dp[i+1][l][r]);
                int ql=a<=l?max(l,c):l;
                int qr=b>=r?min(r,c):r;
                chmin(dp[i][l][r],dp[i+1][ql][qr]+v[i].d);
            }
        }
    }
    cout<<(dp[0][0][k-1]>=1e18?-1:dp[0][0][k-1])<<'\n';
}
 /*
 input:
 
 */















 

Compilation message (stderr)

pinball.cpp: In function 'void setIO(std::string)':
pinball.cpp:42:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   42 |     freopen((s + ".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
pinball.cpp:43:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   43 |     freopen((s + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 11
• Subtask 2: 0 / 18
• Subtask 3: 0 / 22
• Subtask 4: 0 / 49