Submission #959089

#	Time	Username	Problem	Language	Result	Execution time	Memory
959089		yeediot	Popeala (CEOI16_popeala)	C++17	100 / 100	717 ms	50152 KiB

popeala

#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);
}
const int mxt=110005;
const int mxn=55;
const int inf=2e9;
int pre[mxt];
string g[mxn];
int dp[mxt],tdp[mxt];
struct deq{
    int l,r,v[mxt],cnt;
    int calc(int x){
        return dp[x]-pre[x]*cnt;
    }
    void clear(){
        l=1,r=0;
    }
    void pb(int x){
        if(dp[x]==inf){
            return;
        }
        int val=calc(x);
        while(l<=r and calc(v[r])>=val)
            r--;
        v[++r]=x;
    }
    void del(int x){
        if(l<=r and v[l]==x)
            l++;
    }
    int get(int x){
        return l<=r?calc(v[l])+cnt*pre[x]:inf;
    }
}l[mxn];
int last[mxn],num[mxt];
signed main(){
    setio();
    ios::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
    int n,t,s;
    cin>>n>>t>>s;
    l[0].cnt=0;
    for(int i=1;i<=t;i++){
        cin>>pre[i];
        pre[i]+=pre[i-1];
    }
    for(int i=1;i<=n;i++){
        l[i].cnt=i;
        cin>>g[i];
        g[i]="#"+g[i];
        for(int j=1;j<=t;j++){
            if(g[i][j]=='0'){
                break;
            }
            dp[j]+=pre[j];
        }
    }
    for(int j=1;j<=t;j++){
        debug(dp[j]);
    }
    cout<<dp[t]<<'\n';
    for(int k=2;k<=s;k++){
        for(int i=0;i<=n;i++){
            l[i].clear();
            last[i]=0;
        }
        dp[0]=inf;
        for(int j=1;j<=t;j++){
            num[j]=n;
            l[n].pb(j-1);
            for(int i=1;i<=n;i++){
                if(g[i][j]=='0'){
                    for(int z=last[i]+1;z<=j;z++){
                        l[num[z]].del(z-1);
                        l[--num[z]].pb(z-1);
                    }
                    last[i]=j;
                }
            }
            tdp[j]=inf;
            for(int i=0;i<=n;i++){
                chmin(tdp[j],l[i].get(j));
            }
        }
        for(int j=1;j<=t;j++){
            dp[j]=tdp[j];
            debug(dp[j]);
        }
        cout<<dp[t]<<'\n';
    }

}
 /*
 input:
 
 */















 

Compilation message (stderr)

popeala.cpp: In function 'void setIO(std::string)':
popeala.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);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
popeala.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: 8 / 8
• Subtask 2: 9 / 9
• Subtask 3: 9 / 9
• Subtask 4: 74 / 74