Submission #678653

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
678653	2023-01-06 09:28:37	qwerasdfzxcl	Land of the Rainbow Gold (APIO17_rainbow)	C++17	35 / 100	3066 ms	318272 KiB

rainbow

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#include "rainbow.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
int dx[4] = {-1, 0, 1, 0}, dy[4] = {0, 1, 0, -1};
int dx8[9] = {-1, -1, -1, 0, 1, 1, 1, 0, -1}, dy8[9] = {-1, 0, 1, 1, 1, 0, -1, -1, -1};
set<pair<int, int>> st;
void init(int R, int C, int sr, int sc, int M, char *S) {
    st.emplace(sr, sc);
    for (int i=0;i<M;i++){
        int k;
        if (S[i]=='N') k = 0;
        if (S[i]=='E') k = 1;
        if (S[i]=='S') k = 2;
        if (S[i]=='W') k = 3;
        sr += dx[k], sc += dy[k];
        st.emplace(sr, sc);
    }
}
bool valid(int x, int y, int ar, int ac, int br, int bc){
    if (st.find(make_pair(x, y))!=st.end()) return 0;
    return ar <= x && x <= br && ac <= y && y <= bc;
}
void add_edge(int x1, int y1, int x2, int y2, set<pair<int, int>> &V, map<pair<int, int>, vector<pair<int, int>>> &E, int ar, int ac, int br, int bc){
 
 
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Compilation message (stderr)

rainbow.cpp: In function 'void init(int, int, int, int, int, char*)':
rainbow.cpp:20:32: warning: 'k' may be used uninitialized in this function [-Wmaybe-uninitialized]
   20 |         sr += dx[k], sc += dy[k];
      |                            ~~~~^

• Subtask 1: 11 / 11
• Subtask 2: 0 / 12
• Subtask 3: 24 / 24
• Subtask 4: 0 / 27
• Subtask 5: 0 / 26