Submission #130506

#	Time	Username	Problem	Language	Result	Execution time	Memory
130506		m3r8	Calvinball championship (CEOI15_teams)	C++14	100 / 100	353 ms	672 KiB

teams

#include <stdio.h>


#define MOD 1000007
#define ll long long

ll anzN[10010];
ll mx;
int num[10010];


void updateS(){
  for(int i = mx;i>1;i--){
    if(anzN[i]){
      anzN[i+1] += anzN[i];
      anzN[i] = anzN[i] * (i-1);
      anzN[i] %= MOD;
      mx = mx < i+1 ? i+1:mx;
    };
  };
};
int used[10010];
int getA(int idx){
  for(int i = 0;i<idx;i++){
    used[i] = 0;
  };  
  int erg = 0;
  for(int i = 0;i<idx;i++){
    if(!used[num[i]]){
      used[num[i]] = 1;
      erg++;
    };
  };  
  return erg+1;
};
ll sum(){
  ll erg = 0;
  for(int i = 2;i<=mx;i++){
    erg += anzN[i] * i;
    erg %= MOD;
  };  
  return erg;
};

int main(void){
  int n;  
  scanf("%d",&n);
  for(int i = 0;i<n;i++){
    scanf("%d",&num[i]);  
  };
  for(int i = 1;i<n-1;i++){
    updateS();
    int a = getA(i);
    //printf("%d\n",a);
    anzN[a] += num[i]-1;
    mx = mx < a ? a:mx;
  };
  printf("%lld\n",(sum()+num[n-1])%MOD);
};

Compilation message (stderr)

teams.cpp: In function 'int main()':
teams.cpp:47:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&n);
   ~~~~~^~~~~~~~~
teams.cpp:49:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&num[i]);  
     ~~~~~^~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 10 / 10
• Subtask 6: 10 / 10
• Subtask 7: 10 / 10
• Subtask 8: 10 / 10
• Subtask 9: 10 / 10
• Subtask 10: 10 / 10