| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 472731 |
2021-09-14T08:47:32 Z |
hackerbhaiya |
Mecho (IOI09_mecho) |
C++14 |
|
1000 ms |
13872 KB |
#include<bits/stdc++.h>
// #pragma GCC optimize("Ofast")
// #pragma GCC target("avx,avx2,fma")
// #pragma GCC optimization("unroll-loops")
// #pragma GCC optimize("unroll-loops")
// #pragma GCC optimize("fast-math")
// #pragma GCC optimize("no-stack-protector")
// #define ll __int128
#define ll long long
// #define ll int
#define f(i,a,b) for(int i=a;i<b;i++)
#define mod 1000000007
// #define mod 998244353
#define mp make_pair
#define uniq(v) (v).erase(unique(all(v)),(v).end())
#define ff first
#define ss second
#define rf(i,a,b) for(int i=a;i>=b;i--)
#define sc(a) scanf("%lld",&a)
#define pf printf
#define sz(a) (int)(a.size())
#define psf push_front
#define ppf pop_front
#define ppb pop_back
#define pb push_back
#define pq priority_queue
#define all(s) s.begin(),s.end()
#define sp(a) setprecision(a)
#define rz resize
#define ld long double
#define inf (ll)1e18
#define ub upper_bound
#define lb lower_bound
#define bs binary_search
#define eb emplace_back
const double pi = acos(-1);
ll binpow(ll a, ll b){ll res=1;while(b!=0){if(b&1)res*=a;a*=a;b>>=1;}return res;}
// ll binpow(ll a, ll b, ll md){ll res=1;a%=mod;while(b!=0){if(b&1)res*=a,res%=md;a*=a,a%=md;b>>=1;}return res%md;}
using namespace std;
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);
// freopen("xortransform.in","r",stdin);
// freopen("xortransform.out","w",stdout);
// #ifndef ONLINE_JUDGE
// freopen("input.txt","r",stdin);
// freopen("output.txt","w",stdout);
// #endif
int z=1;
// cin>>z;
f(i,1,z+1)
{
//cout<<"Case #"<<i<<": ";
ll n,d,sx,sy,fx,fy;
int dx[]={0,1,0,-1};
int dy[]={1,0,-1,0};
cin>>n>>d;
vector<string> s(n);
f(i,0,n)
cin>>s[i];
ll l=0,r=1e6;
while(l<=r)
{
ll mid=(l+r)/2;
queue<vector<ll> > q;
vector<vector<ll> > dis(n,vector<ll> (n,inf)),dis2(n,vector<ll> (n,inf));
f(i,0,n)
{
f(j,0,n)
{
if(s[i][j]=='H')
q.push({i,j}),dis[i][j]=0;
else if(s[i][j]=='M')
sx=i,sy=j;
else if(s[i][j]=='D')
fx=i,fy=j;
}
}
while(!q.empty())
{
auto temp=q.front();
q.pop();
ll x=temp[0],y=temp[1];
f(i,0,4)
{
ll xx=x+dx[i],yy=y+dy[i];
if(xx>=0 && yy>=0 && xx<n && yy<n && s[xx][yy]!='T' && dis[xx][yy]>d+dis[x][y])
dis[xx][yy]=d+dis[x][y],q.push({xx,yy});
}
}
while(!q.empty())
q.pop();
if(dis[sx][sy]>mid*d)
q.push({sx,sy});
dis2[sx][sy]=mid*d;
while(!q.empty())
{
auto temp=q.front();
q.pop();
ll x=temp[0],y=temp[1];
f(i,0,4)
{
ll xx=x+dx[i],yy=y+dy[i];
if(xx>=0 && yy>=0 && xx<n && yy<n && s[xx][yy]!='T' && dis2[xx][yy]>1+dis2[x][y])
{
if((xx==fx && yy==fy) || (1+dis2[x][y]<dis[xx][yy]))
dis2[xx][yy]=1+dis2[x][y],q.push({xx,yy});
}
}
}
if(dis2[fx][fy]<inf)
l=mid+1;
else
r=mid-1;
}
cout<<r<<"\n";
}
}
Compilation message
mecho.cpp: In function 'int main()':
mecho.cpp:114:27: warning: 'fy' may be used uninitialized in this function [-Wmaybe-uninitialized]
114 | if(dis2[fx][fy]<inf)
| ^
mecho.cpp:114:23: warning: 'fx' may be used uninitialized in this function [-Wmaybe-uninitialized]
114 | if(dis2[fx][fy]<inf)
| ^
mecho.cpp:96:26: warning: 'sy' may be used uninitialized in this function [-Wmaybe-uninitialized]
96 | if(dis[sx][sy]>mid*d)
| ^
mecho.cpp:96:22: warning: 'sx' may be used uninitialized in this function [-Wmaybe-uninitialized]
96 | if(dis[sx][sy]>mid*d)
| ^
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Correct |
1 ms |
204 KB |
Output is correct |
| 3 |
Correct |
1 ms |
204 KB |
Output is correct |
| 4 |
Correct |
1 ms |
204 KB |
Output is correct |
| 5 |
Correct |
1 ms |
204 KB |
Output is correct |
| 6 |
Correct |
1 ms |
204 KB |
Output is correct |
| 7 |
Execution timed out |
1093 ms |
12448 KB |
Time limit exceeded |
| 8 |
Correct |
1 ms |
204 KB |
Output is correct |
| 9 |
Correct |
1 ms |
204 KB |
Output is correct |
| 10 |
Correct |
1 ms |
204 KB |
Output is correct |
| 11 |
Correct |
1 ms |
204 KB |
Output is correct |
| 12 |
Incorrect |
4 ms |
332 KB |
Output isn't correct |
| 13 |
Correct |
7 ms |
332 KB |
Output is correct |
| 14 |
Correct |
10 ms |
332 KB |
Output is correct |
| 15 |
Correct |
1 ms |
204 KB |
Output is correct |
| 16 |
Correct |
1 ms |
204 KB |
Output is correct |
| 17 |
Correct |
1 ms |
204 KB |
Output is correct |
| 18 |
Correct |
2 ms |
204 KB |
Output is correct |
| 19 |
Correct |
2 ms |
332 KB |
Output is correct |
| 20 |
Correct |
2 ms |
332 KB |
Output is correct |
| 21 |
Correct |
2 ms |
332 KB |
Output is correct |
| 22 |
Correct |
2 ms |
332 KB |
Output is correct |
| 23 |
Correct |
3 ms |
332 KB |
Output is correct |
| 24 |
Correct |
3 ms |
364 KB |
Output is correct |
| 25 |
Correct |
6 ms |
332 KB |
Output is correct |
| 26 |
Correct |
4 ms |
308 KB |
Output is correct |
| 27 |
Correct |
4 ms |
316 KB |
Output is correct |
| 28 |
Correct |
5 ms |
332 KB |
Output is correct |
| 29 |
Correct |
5 ms |
332 KB |
Output is correct |
| 30 |
Correct |
7 ms |
316 KB |
Output is correct |
| 31 |
Correct |
6 ms |
428 KB |
Output is correct |
| 32 |
Correct |
7 ms |
420 KB |
Output is correct |
| 33 |
Correct |
122 ms |
2528 KB |
Output is correct |
| 34 |
Correct |
149 ms |
2548 KB |
Output is correct |
| 35 |
Correct |
257 ms |
2508 KB |
Output is correct |
| 36 |
Correct |
177 ms |
3272 KB |
Output is correct |
| 37 |
Correct |
168 ms |
3176 KB |
Output is correct |
| 38 |
Correct |
346 ms |
3196 KB |
Output is correct |
| 39 |
Correct |
215 ms |
4040 KB |
Output is correct |
| 40 |
Correct |
221 ms |
4036 KB |
Output is correct |
| 41 |
Correct |
423 ms |
3952 KB |
Output is correct |
| 42 |
Correct |
250 ms |
4780 KB |
Output is correct |
| 43 |
Correct |
280 ms |
4824 KB |
Output is correct |
| 44 |
Correct |
515 ms |
4812 KB |
Output is correct |
| 45 |
Correct |
308 ms |
5852 KB |
Output is correct |
| 46 |
Correct |
336 ms |
5724 KB |
Output is correct |
| 47 |
Correct |
649 ms |
5736 KB |
Output is correct |
| 48 |
Correct |
359 ms |
6844 KB |
Output is correct |
| 49 |
Correct |
411 ms |
6764 KB |
Output is correct |
| 50 |
Correct |
774 ms |
6776 KB |
Output is correct |
| 51 |
Correct |
425 ms |
7904 KB |
Output is correct |
| 52 |
Correct |
471 ms |
7944 KB |
Output is correct |
| 53 |
Correct |
907 ms |
8012 KB |
Output is correct |
| 54 |
Correct |
526 ms |
9064 KB |
Output is correct |
| 55 |
Correct |
542 ms |
9168 KB |
Output is correct |
| 56 |
Execution timed out |
1037 ms |
9088 KB |
Time limit exceeded |
| 57 |
Correct |
567 ms |
10580 KB |
Output is correct |
| 58 |
Correct |
616 ms |
10592 KB |
Output is correct |
| 59 |
Execution timed out |
1090 ms |
10316 KB |
Time limit exceeded |
| 60 |
Correct |
599 ms |
11724 KB |
Output is correct |
| 61 |
Correct |
713 ms |
11840 KB |
Output is correct |
| 62 |
Execution timed out |
1094 ms |
11752 KB |
Time limit exceeded |
| 63 |
Execution timed out |
1083 ms |
11724 KB |
Time limit exceeded |
| 64 |
Execution timed out |
1092 ms |
11668 KB |
Time limit exceeded |
| 65 |
Execution timed out |
1091 ms |
11852 KB |
Time limit exceeded |
| 66 |
Execution timed out |
1087 ms |
11724 KB |
Time limit exceeded |
| 67 |
Execution timed out |
1085 ms |
11724 KB |
Time limit exceeded |
| 68 |
Execution timed out |
1077 ms |
11840 KB |
Time limit exceeded |
| 69 |
Execution timed out |
1091 ms |
11852 KB |
Time limit exceeded |
| 70 |
Execution timed out |
1089 ms |
11852 KB |
Time limit exceeded |
| 71 |
Execution timed out |
1084 ms |
11852 KB |
Time limit exceeded |
| 72 |
Execution timed out |
1083 ms |
11972 KB |
Time limit exceeded |
| 73 |
Execution timed out |
1083 ms |
13748 KB |
Time limit exceeded |
| 74 |
Execution timed out |
1090 ms |
13580 KB |
Time limit exceeded |
| 75 |
Execution timed out |
1077 ms |
13788 KB |
Time limit exceeded |
| 76 |
Execution timed out |
1087 ms |
13620 KB |
Time limit exceeded |
| 77 |
Execution timed out |
1088 ms |
13872 KB |
Time limit exceeded |
| 78 |
Execution timed out |
1079 ms |
13492 KB |
Time limit exceeded |
| 79 |
Execution timed out |
1059 ms |
13520 KB |
Time limit exceeded |
| 80 |
Execution timed out |
1082 ms |
13516 KB |
Time limit exceeded |
| 81 |
Execution timed out |
1061 ms |
13688 KB |
Time limit exceeded |
| 82 |
Execution timed out |
1088 ms |
13556 KB |
Time limit exceeded |
| 83 |
Execution timed out |
1089 ms |
13196 KB |
Time limit exceeded |
| 84 |
Execution timed out |
1091 ms |
13124 KB |
Time limit exceeded |
| 85 |
Execution timed out |
1089 ms |
13180 KB |
Time limit exceeded |
| 86 |
Execution timed out |
1090 ms |
12980 KB |
Time limit exceeded |
| 87 |
Execution timed out |
1072 ms |
13132 KB |
Time limit exceeded |
| 88 |
Execution timed out |
1088 ms |
12712 KB |
Time limit exceeded |
| 89 |
Execution timed out |
1091 ms |
13028 KB |
Time limit exceeded |
| 90 |
Execution timed out |
1090 ms |
12800 KB |
Time limit exceeded |
| 91 |
Execution timed out |
1079 ms |
12744 KB |
Time limit exceeded |
| 92 |
Execution timed out |
1094 ms |
12868 KB |
Time limit exceeded |
