oj.uz

Submission #112126

# Submission time Handle Problem Language Result Execution time Memory
112126 2019-05-17T14:12:10 Z _demon_ Jakarta Skyscrapers (APIO15_skyscraper) C++14
10 / 100
 103 ms 96120 KB 
#include <bits/stdc++.h>
using namespace std; 
long long n,m;
long long a[2009];
long long p[2009];
long long done[2009][2009];
long long dp[2009][2009][3];
vector<long long>v[10009];
long long inf=1000000000000009ll;
long long bt(long long id,long long dog,long long yes){
        if(yes==1)return inf;
        done[id][dog]=1;
        if(id<0 || id>n)return inf;
        if(id==a[1])return 0;
        long long &ret=dp[id][dog][yes];
        if(ret!=-1)return ret;
        ret=inf;
        if(id+p[dog]<=n && id-p[dog]>0)ret=min(bt(id+p[dog],dog,done[id+p[dog]][dog]),bt(id-p[dog],dog,done[id-p[dog]][dog]))+1;
        else if(id+p[dog]<=n) ret=min(ret,bt(id+p[dog],dog,done[id+p[dog]][dog]))+1;
        else if(id-p[dog]>0) ret=min(ret,bt(id-p[dog],dog,done[id-p[dog]][dog]))+1;
        for(int i=0;i<v[id].size();i++){
                long long D=v[id][i];
                ret=min(ret,bt(id,D,done[id][D]));
        }
        return ret;
}
int main(){
        memset(dp,-1,sizeof(dp));
        cin>>n>>m;
        for(int i=0;i<m;i++){
                cin>>a[i]>>p[i];
                v[a[i]].push_back(i);
        }
        long long x=bt(a[0],0,0);
        if(x!=inf) cout<<x<<endl;
        else cout<<-1<<endl;
}

Compilation message

skyscraper.cpp: In function 'long long int bt(long long int, long long int, long long int)':
skyscraper.cpp:21:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int i=0;i<v[id].size();i++){
                     ~^~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 71 ms 95352 KB Output is correct
2 Correct 69 ms 95348 KB Output is correct
3 Correct 78 ms 95352 KB Output is correct
4 Correct 88 ms 95352 KB Output is correct
5 Correct 69 ms 95324 KB Output is correct
6 Correct 68 ms 95352 KB Output is correct
7 Correct 68 ms 95480 KB Output is correct

Subtask #2
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 71 ms 95408 KB Output is correct
2 Correct 103 ms 95324 KB Output is correct
3 Correct 77 ms 95280 KB Output is correct
4 Correct 74 ms 95352 KB Output is correct
5 Correct 68 ms 95480 KB Output is correct
6 Correct 82 ms 95352 KB Output is correct
7 Correct 79 ms 95352 KB Output is correct
8 Correct 70 ms 95480 KB Output is correct
9 Correct 68 ms 95480 KB Output is correct
10 Incorrect 67 ms 96120 KB Output isn't correct
11 Halted 0 ms 0 KB -

Subtask #3
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 65 ms 95352 KB Output is correct
2 Correct 65 ms 95480 KB Output is correct
3 Correct 66 ms 95356 KB Output is correct
4 Correct 71 ms 95324 KB Output is correct
5 Correct 68 ms 95352 KB Output is correct
6 Correct 70 ms 95480 KB Output is correct
7 Correct 66 ms 95352 KB Output is correct
8 Correct 66 ms 95432 KB Output is correct
9 Correct 66 ms 95480 KB Output is correct
10 Incorrect 67 ms 96120 KB Output isn't correct
11 Halted 0 ms 0 KB -

Subtask #4
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 66 ms 95352 KB Output is correct
2 Correct 67 ms 95396 KB Output is correct
3 Correct 73 ms 95352 KB Output is correct
4 Correct 83 ms 95320 KB Output is correct
5 Correct 68 ms 95352 KB Output is correct
6 Correct 74 ms 95352 KB Output is correct
7 Correct 68 ms 95356 KB Output is correct
8 Correct 68 ms 95480 KB Output is correct
9 Correct 91 ms 95480 KB Output is correct
10 Incorrect 72 ms 96120 KB Output isn't correct
11 Halted 0 ms 0 KB -

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 67 ms 95364 KB Output is correct
2 Correct 67 ms 95352 KB Output is correct
3 Correct 77 ms 95352 KB Output is correct
4 Correct 81 ms 95352 KB Output is correct
5 Correct 82 ms 95352 KB Output is correct
6 Correct 70 ms 95352 KB Output is correct
7 Correct 68 ms 95352 KB Output is correct
8 Correct 65 ms 95484 KB Output is correct
9 Correct 66 ms 95480 KB Output is correct
10 Incorrect 66 ms 96120 KB Output isn't correct
11 Halted 0 ms 0 KB -