oj.uz

Submission #537035

# Submission time Handle Problem Language Result Execution time Memory
537035 2022-03-14T09:52:46 Z jamezzz Popeala (CEOI16_popeala) C++17
26 / 100
 2000 ms 71408 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[20005];

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){
		sf(" %s",&ch);
		for(int j=1;j<=t;++j){
			r[i][j]=ch[j-1]-'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:27:9: warning: format '%s' expects argument of type 'char*', but argument 2 has type 'char (*)[20005]' [-Wformat=]
   27 |   sf(" %s",&ch);
      |        ~^  ~~~
      |         |  |
      |         |  char (*)[20005]
      |         char*
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:27:5: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   27 |   sf(" %s",&ch);
      |     ^

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 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 3912 KB Output is correct
2 Correct 25 ms 3696 KB Output is correct
3 Correct 25 ms 3852 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 133 ms 9252 KB Output is correct
2 Correct 238 ms 12064 KB Output is correct
3 Correct 305 ms 15324 KB Output is correct

Subtask #4
0 / 74.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 2 ms 1492 KB Output is correct
3 Correct 27 ms 3912 KB Output is correct
4 Correct 25 ms 3696 KB Output is correct
5 Correct 25 ms 3852 KB Output is correct
6 Correct 133 ms 9252 KB Output is correct
7 Correct 238 ms 12064 KB Output is correct
8 Correct 305 ms 15324 KB Output is correct
9 Correct 618 ms 24140 KB Output is correct
10 Correct 831 ms 31188 KB Output is correct
11 Correct 1926 ms 69488 KB Output is correct
12 Execution timed out 2082 ms 71408 KB Time limit exceeded
13 Halted 0 ms 0 KB -