Submission #47436

#	Time	Username	Problem	Language	Result	Execution time	Memory
47436		mirbek01	Worst Reporter 3 (JOI18_worst_reporter3)	C++17	0 / 100	358 ms	19704 KiB

worst_reporter3

# include <bits/stdc++.h>

using namespace std;

const int N = 5e5 + 2;

long long n, q, d[N], p[N];

int main(){
      scanf("%lld %lld", &n, &q);

      int cn = 0;

      for(int i = 1; i <= n; i ++){
            scanf("%lld", &d[i]);
            if(d[i] == 1) cn ++;
      }

      if(cn == n){
            for(int i = 1; i <= q; i ++){
                  int t, l, r;
                  scanf("%d %d %d", &t, &l, &r);
                  int L = t - n - 1, R = t;
                  if(l <= L && R <= r){
                        printf("%d\n", R - L + 1);
                        continue;
                  }
                  if(l <= L && L <= r){
                        printf("%d\n", r - L + 1);
                        continue;
                  }
                  if(l <= R && R <= r){
                        printf("%d\n", R - l + 1);
                        continue;
                  }
                  printf("0\n");
            }
            return 0;
      }

      for(int i = 2; i <= n; i ++){
            int lo = 1, hi = 1e9;
            while(hi - lo > 1){
                  int md = (lo + hi) >> 1;
                  if(d[i - 1] * md + (-(i - 1)) >= d[i])
                        hi = md;
                  else
                        lo = md;
            }
            if(d[i - 1] * lo + (-(i - 1)) >= d[i]) hi = lo;
            d[i] = d[i - 1] * hi + (-(i - 1)) - 1 - (-i);
      }

      for(int i = 1; i <= q; i ++){
            int t, l, r;
            scanf("%d %d %d", &t, &l, &r);
            p[0] = t;
            for(int j = 1; j <= n; j ++){
                  p[j] = -j;
                  int lo = 0, hi = 1000;
                  while(hi - lo > 1){
                        int md = (lo + hi) >> 1;
                        if(md * d[j] + p[j] < p[j - 1])
                              lo = md;
                        else
                              hi = md;
                  }
                  if(hi * d[j] + p[j] < p[j - 1]) lo = hi;
                  p[j] = lo * d[j] + p[j];
            }
            int cn = 0;
            for(int j = 0; j <= n; j ++)
                  if(l <= p[j] && p[j] <= r) cn ++;
            printf("%d\n", cn);
      }
}
/**
3 6
2
5
3
6 2 4
**/

Compilation message (stderr)

worst_reporter3.cpp: In function 'int main()':
worst_reporter3.cpp:10:12: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
       scanf("%lld %lld", &n, &q);
       ~~~~~^~~~~~~~~~~~~~~~~~~~~
worst_reporter3.cpp:15:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%lld", &d[i]);
             ~~~~~^~~~~~~~~~~~~~~
worst_reporter3.cpp:22:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
                   scanf("%d %d %d", &t, &l, &r);
                   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
worst_reporter3.cpp:56:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d %d %d", &t, &l, &r);
             ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 7
• Subtask 2: 0 / 12
• Subtask 3: 0 / 81