Submission #492215

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
492215	2021-12-06 01:40:06	ToroTN	Tracks in the Snow (BOI13_tracks)	C++14	100 / 100	1056 ms	111500 KiB

tracks

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#include<bits/stdc++.h>
using namespace std;
int n,m,dx[]={1,-1,0,0},dy[]={0,0,1,-1},d[4005][4005],u,v,sx,sy,x,y;
char s[4005][4005];
queue<pair<int,int> > q;
vector<pair<int,int> > g;
int main()
{
    scanf("%d%d",&n,&m);
    for(int i=1;i<=n;i++)
    {
        scanf("%s",s[i]+1);
    }
    g.push_back({1,1});
    for(int i=1;;i++)
    {
        //printf("%d\n",i);
        for(int j=0;j<g.size();j++)
        {
            sx=g[j].first;
            sy=g[j].second;
            //printf("%d %d\n",sx,sy);
            q.push({sx,sy});
            d[sx][sy]=1;
        }
        g.clear();
        while(!q.empty())
        {
            u=q.front().first;
            v=q.front().second;
 
 
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Compilation message (stderr)

tracks.cpp: In function 'int main()':
tracks.cpp:18:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   18 |         for(int j=0;j<g.size();j++)
      |                     ~^~~~~~~~~
tracks.cpp:9:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    9 |     scanf("%d%d",&n,&m);
      |     ~~~~~^~~~~~~~~~~~~~
tracks.cpp:12:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |         scanf("%s",s[i]+1);
      |         ~~~~~^~~~~~~~~~~~~

• Subtask 1: 30 / 30
• Subtask 2: 70 / 70