Submission #1059640

#TimeUsernameProblemLanguageResultExecution timeMemory
1059640KasymKPairs (IOI07_pairs)C++17
18 / 100
17 ms1812 KiB
#include "bits/stdc++.h" using namespace std; #define ff first #define ss second #define all(v) v.begin(), v.end() #define ll long long #define pb push_back #define pii pair<int, int> #define wr puts("----------------") template<class T>bool umin(T& a,T b){if(a>b){a=b;return 1;}return 0;} template<class T>bool umax(T& a,T b){if(a<b){a=b;return 1;}return 0;} int main(){ int b, n, d, m; scanf("%d%d%d%d", &b, &n, &d, &m); if(b == 1){ vector<int> v; for(int i = 1; i <= n; ++i){ int x; scanf("%d", &x); v.pb(x); } sort(all(v)); int answer = 0; for(auto I = v.begin(); I != v.end(); ++I){ int x = *I; auto it = upper_bound(all(v), x-d-1); answer += (I-it); } printf("%d\n", answer); } // else if(b == 2){ // auto get = [&](pair<int, int> A, pair<int, int> B) -> int { // int a = A.ff, b = A.ss; // int c = B.ff, d = B.ss; // return (abs(a-c)+abs(b-d)); // }; // vector<pii> v; // for(int i = 1; i <= n; ++i){ // int a, b; // scanf("%d%d", &a, &b); // v.pb({a, b}); // } // int answer = 0; // for(int i = 0; i < n; ++i) // for(int j = i+1; j < n; ++j) // if(get(v[i], v[j]) <= d) // answer++; // printf("%d\n", answer); // } // else{ // auto get = [&](tuple<int, int, int> A, tuple<int, int, int> B) -> int { // int a, b, c, x, y, z; // tie(a, b, c) = A; // tie(x, y, z) = B; // return (abs(a-x)+abs(b-y)+abs(c-z)); // }; // vector<tuple<int, int, int>> v; // for(int i = 1; i <= n; ++i){ // int a, b, c; // scanf("%d%d%d", &a, &b, &c); // v.pb({a, b, c}); // } // int answer = 0; // for(int i = 0; i < n; ++i) // for(int j = i+1; j < n; ++j) // if(get(v[i], v[j]) <= d) // answer++; // printf("%d\n", answer); // } return 0; }

Compilation message (stderr)

pairs.cpp: In function 'int main()':
pairs.cpp:15:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |     scanf("%d%d%d%d", &b, &n, &d, &m);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
pairs.cpp:20:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   20 |             scanf("%d", &x);
      |             ~~~~~^~~~~~~~~~
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