Submission #667359

#	Time	Username	Problem	Language	Result	Execution time	Memory
667359		RambaXGorilla	Carnival (CEOI14_carnival)	C++17	100 / 100	16 ms	276 KiB

carnival

#include<cstdio>
using namespace std;
int N;
int costs[610];
int vis[155] = {};
int cnt = 1;
int party(int l, int r, int x = 0){
    printf("%d ",r - l + 1 + (bool) x);
    if(x) printf("%d ",x);
    for(int i = l;i < r + 1;i++){
        printf("%d ",i);
    }
    fflush(stdout);
    int y;
    scanf("%d",&y);
    return y;
}
void fillCosts(int v = 1, int tl = 1, int tr = N){
    if(tl == tr) return;
    costs[v] = party(tl, tr);
    int tm = (tl + tr) / 2;
    fillCosts(v * 2, tl, tm);
    fillCosts(v * 2 + 1, tm + 1, tr);
}
void travCosts(int x, int v = 1, int tl = 1, int tr = N){
    if(tr <= x){
        return;
    }
    if(tl == tr){
        if(party(tl, tl, x) == 1) vis[tl] = cnt;
        return;
    }
    if(tl > x && party(tl, tr, x) != costs[v]) return;
    int tm = (tl + tr) / 2;
    travCosts(x, v * 2, tl, tm);
    travCosts(x, v * 2 + 1, tm + 1, tr);
}
int main(){
    scanf("%d",&N);
    fillCosts();
    for(int i = 1;i < N + 1;i++){
        if(!vis[i]){
            vis[i] = cnt;
            travCosts(i);
            cnt++;
        }
    }
    printf("0 ");
    for(int i = 1;i < N + 1;i++){
        printf("%d ",vis[i]);
    }
}

Compilation message (stderr)

carnival.cpp: In function 'int party(int, int, int)':
carnival.cpp:15:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |     scanf("%d",&y);
      |     ~~~~~^~~~~~~~~
carnival.cpp: In function 'int main()':
carnival.cpp:39:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   39 |     scanf("%d",&N);
      |     ~~~~~^~~~~~~~~

• Subtask 1: 20 / 20
• Subtask 2: 20 / 20
• Subtask 3: 20 / 20
• Subtask 4: 20 / 20
• Subtask 5: 20 / 20