Submission #226610

#	Time	Username	Problem	Language	Result	Execution time	Memory
226610		MKopchev	Jump (BOI06_jump)	C++14	100 / 100	20 ms	2176 KiB

jump

#include<bits/stdc++.h>
using namespace std;
const int nmax=1e2+5;
int n;
int inp[nmax][nmax];

vector<int> dp[nmax][nmax];

vector<int> add(vector<int> a,vector<int> b)
{
    int sz=max(a.size(),b.size());

    vector<int> ret={};

    for(int i=0;i<sz;i++)
    {
        ret.push_back(0);
        if(i<a.size())ret[i]+=a[i];
        if(i<b.size())ret[i]+=b[i];
    }

    ret.push_back(0);
    for(int i=0;i<ret.size()-1;i++)
    {
        ret[i+1]+=ret[i]/10;
        ret[i]=ret[i]%10;
    }

    if(ret.back()==0)ret.pop_back();

    return ret;
}

void print(vector<int> outp)
{
    for(int i=outp.size()-1;i>=0;i--)
        printf("%i",outp[i]);
    printf("\n");
}
int main()
{
    scanf("%i",&n);
    for(int i=1;i<=n;i++)
        for(int j=1;j<=n;j++)
            scanf("%i",&inp[i][j]);

    for(int i=n;i>=1;i--)
        for(int j=n;j>=1;j--)
        {
            dp[i][j]={0};
            if(i==n&&j==n){dp[i][j]={1};continue;}

            if(i+inp[i][j]<=n)dp[i][j]=add(dp[i][j],dp[i+inp[i][j]][j]);

            if(j+inp[i][j]<=n)dp[i][j]=add(dp[i][j],dp[i][j+inp[i][j]]);
        }

    print(dp[1][1]);
    return 0;
}

Compilation message (stderr)

jump.cpp: In function 'std::vector<int> add(std::vector<int>, std::vector<int>)':
jump.cpp:18:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         if(i<a.size())ret[i]+=a[i];
            ~^~~~~~~~~
jump.cpp:19:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         if(i<b.size())ret[i]+=b[i];
            ~^~~~~~~~~
jump.cpp:23:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<ret.size()-1;i++)
                 ~^~~~~~~~~~~~~
jump.cpp: In function 'int main()':
jump.cpp:42:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%i",&n);
     ~~~~~^~~~~~~~~
jump.cpp:45:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%i",&inp[i][j]);
             ~~~~~^~~~~~~~~~~~~~~~~

• Subtask 1: 100 / 100