Submission #537029

#	Time	Username	Problem	Language	Result	Execution time	Memory
537029		jamezzz	Popeala (CEOI16_popeala)	C++17	26 / 100	2059 ms	71528 KiB

popeala

#include <bits/stdc++.h>
using namespace std;

#pragma GCC optimize("-O3")
#pragma comment(linker, "/stack:200000000")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,fma,tune=native")
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")

#define fi first
#define se second
#define sf scanf
#define pf printf
#define INF 1023456789
typedef pair<int,int> ii;

int t,n,s,p[20005],r[55][20005],pfx[200005];
ii pv[20005][55];
int dp[55][20005],st[55][20][20005];
char ch;

int main(){
	sf("%d%d%d",&n,&t,&s);
	for(int i=1;i<=t;++i){
		sf("%d",&p[i]);
		pfx[i]=p[i]+pfx[i-1];
	}
	for(int i=0;i<n;++i){
		for(int j=1;j<=t;++j){
			sf(" %c",&ch);
			r[i][j]=ch-'0'+r[i][j-1];
		}
	}
	for(int i=1;i<=t;++i){
		for(int j=0;j<=n;++j){
			//find range with exactly j all 1s
			int lo=1,hi=i,mid,res=-1,res2=-1;
			while(lo<=hi){
				mid=(lo+hi)/2;
				int cnt=0;
				for(int k=0;k<n;++k){
					if(r[k][i]-r[k][mid-1]==i-mid+1)++cnt;
				}
				if(cnt>=j)res=mid,hi=mid-1;
				else lo=mid+1;
			}
			lo=1,hi=i;
			while(lo<=hi){
				mid=(lo+hi)/2;
				int cnt=0;
				for(int k=0;k<n;++k){
					if(r[k][i]-r[k][mid-1]==i-mid+1)++cnt;
				}
				if(cnt<=j)res2=mid,lo=mid+1;
				else hi=mid-1;
			}
			pv[i][j]={res,res2};
		}
	}
	for(int i=1;i<=t;++i)dp[0][i]=INF;
	for(int i=1;i<=s;++i)dp[i][0]=INF;
	for(int k=1;k<=s;++k){
		for(int j=0;j<=n;++j){//how many all 1s
			for(int i=1;i<=t;++i){//position
				st[j][0][i]=dp[k-1][i-1]-pfx[i-1]*j;
			}
			for(int k=1;k<15;++k){
				for(int i=1;i+(1<<k)<=t+1;++i){
					st[j][k][i]=min(st[j][k-1][i],st[j][k-1][i+(1<<(k-1))]);
				}
			}
		}
		for(int i=1;i<=t;++i){
			dp[k][i]=INF;
			for(int j=0;j<=n;++j){//how many all 1s
				int x=pv[i][j].fi,y=pv[i][j].se;
				if(x==-1||y==-1||x>y)continue;
				int l=32-__builtin_clz(y-x+1)-1;
				dp[k][i]=min(dp[k][i],j*pfx[i]+min(st[j][l][x],st[j][l][y-(1<<l)+1]));
			}
		}
	}
	for(int i=1;i<=s;++i)pf("%d\n",dp[i][t]);
}

/*
3 5 5
4 3 5 4 3
10110
11011
00101
*/

Compilation message (stderr)

popeala.cpp:5: warning: ignoring '#pragma comment ' [-Wunknown-pragmas]
    5 | #pragma comment(linker, "/stack:200000000")
      | 
popeala.cpp: In function 'int main()':
popeala.cpp:23:4: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   23 |  sf("%d%d%d",&n,&t,&s);
      |    ^
popeala.cpp:25:5: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   25 |   sf("%d",&p[i]);
      |     ^
popeala.cpp:30:6: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   30 |    sf(" %c",&ch);
      |      ^

• Subtask 1: 8 / 8
• Subtask 2: 9 / 9
• Subtask 3: 9 / 9
• Subtask 4: 0 / 74