Submission #904535

#	Time	Username	Problem	Language	Result	Execution time	Memory
904535		vjudge1	Land of the Rainbow Gold (APIO17_rainbow)	C++17	Compilation error	0 ms	0 KiB

rainbow

#include<bitset>

bitset<3> was[200001];
int pref1[200005];
int pref2[200005];
int pref12[200005];
void init(int r,int c,int sr,int sc,int m,char* s){
    int px=sr,py=sc;
    was[py][px]=1;
    for(int i=0;i<m;i++){
        char u=s[i];
        if(u=='S'){
            px++;
        }else if(u=='N'){
            px--;
        }else if(u=='E'){
            py++;
        }else{
            py--;
        }
        // cout<<px<<' '<<py<<endl;
        was[py][px]=1;
    }
    for(int j=2;j<=c;j++){
        pref12[j]=pref12[j-1];
        if((was[j].count()==0 and was[j-1].count()==0) or (was[j]|was[j-1]).count()>0){
        }else{
            pref12[j]++;
        }
    }
    for(int j=2;j<=c;j++){
        pref1[j]=pref1[j-1];
        pref2[j]=pref2[j-1];
        if(was[j][1] and was[j-1][1]){
            pref1[j]++;
        }
        if(was[j][2] and was[j-1][2]){
            pref2[j]++;
        }
    }
}
int colour(int lx,int ly,int rx,int ry){
    if(lx<rx){
        return pref12[ry]-pref12[ly];
    }else if(lx==1){
        return pref1[ry]-pref1[ly];
    }else{
        return pref2[ry]-pref2[ly];
    }
}
int main() {
    scanf("%d %d %d %d", &R, &C, &M, &Q);
    scanf("%d %d", &sr, &sc);
    if (M > 0) {
        scanf(" %s ", S);
    }

    init(R, C, sr, sc, M, S);

    int query;
    for (query = 0; query < Q; query++) {
        int ar, ac, br, bc;
        scanf("%d %d %d %d", &ar, &ac, &br, &bc);
        printf("%d\n", colour(ar, ac, br, bc));
    }

    return 0;
}

Compilation message (stderr)

rainbow.cpp:3:1: error: 'bitset' does not name a type
    3 | bitset<3> was[200001];
      | ^~~~~~
rainbow.cpp: In function 'void init(int, int, int, int, int, char*)':
rainbow.cpp:9:5: error: 'was' was not declared in this scope
    9 |     was[py][px]=1;
      |     ^~~
rainbow.cpp: In function 'int main()':
rainbow.cpp:52:27: error: 'R' was not declared in this scope
   52 |     scanf("%d %d %d %d", &R, &C, &M, &Q);
      |                           ^
rainbow.cpp:52:31: error: 'C' was not declared in this scope
   52 |     scanf("%d %d %d %d", &R, &C, &M, &Q);
      |                               ^
rainbow.cpp:52:35: error: 'M' was not declared in this scope
   52 |     scanf("%d %d %d %d", &R, &C, &M, &Q);
      |                                   ^
rainbow.cpp:52:39: error: 'Q' was not declared in this scope
   52 |     scanf("%d %d %d %d", &R, &C, &M, &Q);
      |                                       ^
rainbow.cpp:53:21: error: 'sr' was not declared in this scope
   53 |     scanf("%d %d", &sr, &sc);
      |                     ^~
rainbow.cpp:53:26: error: 'sc' was not declared in this scope
   53 |     scanf("%d %d", &sr, &sc);
      |                          ^~
rainbow.cpp:55:23: error: 'S' was not declared in this scope
   55 |         scanf(" %s ", S);
      |                       ^
rainbow.cpp:58:27: error: 'S' was not declared in this scope
   58 |     init(R, C, sr, sc, M, S);
      |                           ^
rainbow.cpp:63:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   63 |         scanf("%d %d %d %d", &ar, &ac, &br, &bc);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~