oj.uz

Submission #537028

# Submission time Handle Problem Language Result Execution time Memory
537028 2022-03-14T09:48:25 Z jamezzz Popeala (CEOI16_popeala) C++17
26 / 100
 2000 ms 71700 KB 
#include <bits/stdc++.h>
using namespace std;

#pragma GCC optimize("-O3")
#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

popeala.cpp: In function 'int main()':
popeala.cpp:21:4: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   21 |  sf("%d%d%d",&n,&t,&s);
      |    ^
popeala.cpp:23:5: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   23 |   sf("%d",&p[i]);
      |     ^
popeala.cpp:28:6: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   28 |    sf(" %c",&ch);
      |      ^

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 2 ms 1492 KB Output is correct

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 3904 KB Output is correct
2 Correct 25 ms 3732 KB Output is correct
3 Correct 29 ms 3832 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 140 ms 9208 KB Output is correct
2 Correct 236 ms 12128 KB Output is correct
3 Correct 339 ms 15416 KB Output is correct

Subtask #4
0 / 74.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 2 ms 1492 KB Output is correct
3 Correct 27 ms 3904 KB Output is correct
4 Correct 25 ms 3732 KB Output is correct
5 Correct 29 ms 3832 KB Output is correct
6 Correct 140 ms 9208 KB Output is correct
7 Correct 236 ms 12128 KB Output is correct
8 Correct 339 ms 15416 KB Output is correct
9 Correct 549 ms 24144 KB Output is correct
10 Correct 742 ms 31140 KB Output is correct
11 Correct 1874 ms 69340 KB Output is correct
12 Execution timed out 2005 ms 71700 KB Time limit exceeded
13 Halted 0 ms 0 KB -