Submission #779830

#	Time	Username	Problem	Language	Result	Execution time	Memory
779830		79brue	Bodyguards (CEOI10_bodyguards)	C++17	10 / 100	68 ms	4668 KiB

bodyguards

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

int n, m;
pair<ll, ll> a[200002];
pair<ll, ll> b[200002];

int main(){
    scanf("%d", &n);
    for(int i=1; i<=n; i++) scanf("%lld %lld", &a[i].first, &a[i].second);
    scanf("%d", &m);
    for(int i=1; i<=m; i++) scanf("%lld %lld", &b[i].first, &b[i].second);
    sort(a+1, a+n+1); /// 짧은 것부터
    sort(b+1, b+m+1), reverse(b+1, b+m+1); /// 긴 것부터

    ll level = b[1].first; /// 초기 시작 위치
    ll limit = 1; /// 오른쪽 한계
    ll limitSum = b[1].second;
    ll cur = 0; /// 현재 채운 칸 위치

    for(int i=1; i<=n; i++){
        ll v = a[i].first * a[i].second;
        while(v){
            while(limit < m && level <= b[limit+1].first) limitSum += b[++limit].second;
            if(a[i].first > limitSum && !(limitSum+b[limit+1].second >= a[i].first && b[limit+1].first == level-1)){
                puts("0");
                return 0;
            }
            ll tmp = min(v, limitSum * (level - b[limit+1].first) - cur);
            v -= tmp;
            level -= (cur+tmp)/limitSum;
            cur = (cur+tmp)%limitSum;
        }
    }

    puts("1");
}

Compilation message (stderr)

bodyguards.cpp: In function 'int main()':
bodyguards.cpp:12:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |     scanf("%d", &n);
      |     ~~~~~^~~~~~~~~~
bodyguards.cpp:13:34: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |     for(int i=1; i<=n; i++) scanf("%lld %lld", &a[i].first, &a[i].second);
      |                             ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
bodyguards.cpp:14:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |     scanf("%d", &m);
      |     ~~~~~^~~~~~~~~~
bodyguards.cpp:15:34: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |     for(int i=1; i<=m; i++) scanf("%lld %lld", &b[i].first, &b[i].second);
      |                             ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 0 / 10
• Subtask 3: 0 / 10
• Subtask 4: 0 / 10
• Subtask 5: 0 / 10
• Subtask 6: 0 / 10
• Subtask 7: 0 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 10
• Subtask 10: 0 / 10