Submission #923940

#	Time	Username	Problem	Language	Result	Execution time	Memory
923940		irmuun	Land of the Rainbow Gold (APIO17_rainbow)	C++17	Compilation error	0 ms	0 KiB

rainbow

#include<bits/stdc++.h>
#include "rainbow.h"

using namespace std;

#define ll long long
#define pb push_back
#define ff first
#define ss second
#define all(s) s.begin(),s.end()
#define rall(s) s.rbegin(),s.rend()

bool used[51][51],water[51][51];

vector<int>dx={1,-1,0,0};
vector<int>dy={0,0,1,-1};
int r1,r2,c1,c2;

bool check(int x,int y){
    if(x<r1||x>r2||y<c1||y>c2) return false;
    return true;
}

void dfs(int x,int y){
    if(!check(x,y)||water[x][y]==true||used[x][y]==true) return;
    used[x][y]=true;
    for(int i=0;i<4;i++){
        dfs(x+dx[i],y+dy[i]);
    }
}

void init(int R,int C,int sr,int sc,int M,string S){
    water[sr][sc]=true;
    for(int i=0;i<M;i++){
        if(S[i]=='N') sr--;
        if(S[i]=='S') sr++;
        if(S[i]=='W') sc--;
        if(S[i]=='E') sc++;
        water[sr][sc]=true;
    }
}

int colours(int ar,int ac,int br,int bc){
    r1=ar;
    r2=br;
    c1=ac;
    c2=bc;
    memset(used,0,sizeof used);
    int ans=0;
    for(int i=ar;i<=br;i++){
        for(int j=ac;j<=bc;j++){
            if(!used[i][j]&&water[i][j]==false){
                ans++;
                dfs(i,j);
            }
        }
    }
    return ans;
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccIf7gGG.o: in function `main':
grader.cpp:(.text.startup+0xed): undefined reference to `init(int, int, int, int, int, char*)'
/usr/bin/ld: grader.cpp:(.text.startup+0x167): undefined reference to `colour(int, int, int, int)'
collect2: error: ld returned 1 exit status